Mat 12:31-32 Therefore I say to you: Every sin and blasphemy shall be forgiven men, but the blasphemy of the Spirit shall not be forgiven. And whosoever shall speak a word against the Son of man, it shall be forgiven him: but he that shall speak against the Holy Ghost, it shall not be forgiven him neither in this world, nor in the world to come. And these will go away into eternal punishment, but the righteous into eternal life.
Mat 25:46 And these will go away into eternal punishment, but the righteous into eternal life.
2Th 1:7-9 And to you who are troubled, rest with us, when the Lord Jesus shall be revealed from heaven with the angels of his power: In a flame of fire, giving vengeance to them who know not God and who obey not the gospel of our Lord Jesus Christ. Who shall suffer eternal punishment in destruction, from the face of the Lord and from the glory of his power…
Rev 20:10 and the devil who had deceived them was thrown into the lake of fire and sulfur where the beast and the false prophet were, and they will be tormented day and night forever and ever.
St. Polycarp of Smryna ca. 69-155
The proconsul then said to him, “I have wild beasts at hand; to these will I cast you, unless you repent.”
But he answered, “Call them then, for we are not accustomed to repent of what is good in order to adopt that which is evil; and it is well for me to be changed from what is evil to what is righteous.”
But again the proconsul said to him, “I will cause you to be consumed by fire, seeing you despise the wild beasts, if you will not repent.”
But Polycarp said, “You threaten me with fire which burns for an hour, and after a little is extinguished, but are ignorant of the fire of the coming judgment and of eternal punishment, reserved for the ungodly. But why do you tarry? Bring forth what you will.” (The Martyrdom of Polycarp)
St. Justin the Philosopher ca. 103-165
For among us the prince of the wicked spirits is called the serpent, and Satan, and the devil, as you can learn by looking into our writings. And that he would be sent into the fire with his host, and the men who follow him, and would be punished for an endless duration, Christ foretold. (First Apology 28)
St. Irenaeus of Lyons died ca. 202
Inasmuch, then, as in both Testaments there is the same righteousness of God [displayed] when God takes vengeance, in the one case indeed typically, temporarily, and more moderately; but in the other, really, enduringly, and more rigidly: for the fire is eternal, and the wrath of God which shall be revealed from heaven from the face of our Lord (as David also says, “But the face of the Lord is against them that do evil, to cut off the remembrance of them from the earth” ), entails a heavier punishment on those who incur it—the elders pointed out that those men are devoid of sense, who, [arguing] from what happened to those who formerly did not obey God, do endeavour to bring in another Father, setting over against [these punishments] what great things the Lord had done at His coming to save those who received Him, taking compassion upon them; while they keep silence with regard to His judgment; and all those things which shall come upon such as have heard His words, but done them not, and that it were better for them if they had not been born, Matthew 26:24 and that it shall be more tolerable for Sodom and Gomorrha in the judgment than for that city which did not receive the word of His disciples. Matthew 10:15
For as, in the New Testament, that faith of men [to be placed] in God has been increased, receiving in addition [to what was already revealed] the Son of God, that man too might be a partaker of God; so is also our walk in life required to be more circumspect, when we are directed not merely to abstain from evil actions, but even from evil thoughts, and from idle words, and empty talk, and scurrilous language: thus also the punishment of those who do not believe the Word of God, and despise His advent, and are turned away backwards, is increased; being not merely temporal, but rendered also eternal. For to whomsoever the Lord shall say, “Depart from me, you cursed, into everlasting fire,” Matthew 25:41 these shall be damned for ever; and to whomsoever He shall say, “Come, you blessed of my Father, inherit the kingdom prepared for you for eternity,” Matthew 25:34 these do receive the kingdom for ever, and make constant advance in it; since there is one and the same God the Father, and His Word, who has been always present with the human race, by means indeed of various dispensations, and has wrought out many things, and saved from the beginning those who are saved, (for these are they who love God, and follow the Word of God according to the class to which they belong,) and has judged those who are judged, that is, those who forget God, and are blasphemous, and transgressors of His word. (Against Heresies Bk. 4:28:1-2)
Mathetes ca. 150
[H]e who takes upon himself the burden of his neighbour; he who, in whatsoever respect he may be superior, is ready to benefit another who is deficient; he who, whatsoever things he has received from God, by distributing these to the needy, becomes a god to those who receive [his benefits]: he is an imitator of God. Then you shall see, while still on earth, that God in the heavens rules over [the universe]; then you shall begin to speak the mysteries of God; then shall you both love and admire those that suffer punishment because they will not deny God; then shall you condemn the deceit and error of the world when you shall know what it is to live truly in heaven, when you shall despise that which is here esteemed to be death, when you shall fear what is truly death, which is reserved for those who shall be condemned to the eternal fire, which shall afflict those even to the end that are committed to it. Then shall you admire those who for righteousness’ sake endure the fire that is but for a moment, and shall count them happy when you shall know [the nature of] that fire. (Letter to Diognetus 10)
2nd Clement ca. 150
This world and the next are two enemies. The one urges to adultery and corruption, avarice and deceit; the other bids farewell to these things. We cannot, therefore, be the friends of both; and it behoves us, by renouncing the one, to make sure of the other. Let us reckon that it is better to hate the things present, since they are trifling, and transient, and corruptible; and to love those [which are to come,] as being good and incorruptible. For if we do the will of Christ, we shall find rest; otherwise, nothing shall deliver us from eternal punishment, if we disobey His commandments. For thus also saith the Scripture in Ezekiel, “If Noah, Job, and Daniel should rise up, they should not deliver their children in captivity.” Now, if men so eminently righteous are not able by their righteousness to deliver their children, how can we hope to enter into the royal residence of God unless we keep our baptism holy and undefiled? Or who shall be our advocate, unless we be found possessed of works of holiness and righteousness? (2nd Epistle of Clement 6)
St. Hippolytus of Rome ca. 170-235
Standing before [Christ's] judgment, all of them, men, angels, and demons, crying out in one voice, shall say: ‘Just if your judgment!’ And the righteousness of that cry will be apparent in the recompense made to each. To those who have done well, everlasting enjoyment shall be given; while to the lovers of evil shall be given eternal punishment. The unquenchable and unending fire awaits these latter, and a certain fiery worm which doesnot die and which does not waste the body but continually bursts forth from the body with unceasing pain. No sleep will give them rest; no night will soothe them; no death will deliver them from punishment; no appealof interceding friends will profit them. (Against the Greeks 3)
St. Cyprian of Carthage died ca. 258
When the day of judgment shall come, what joy of believers, what sorrow of unbelievers; that they should have been unwilling to believe here, and now that they should be unable to return that they might believe! An ever-burning Gehenna will burn up the condemned, and a punishment devouring with living flames; nor will there be any source whence at any time they may have either respite or end to their torments. Souls with their bodies will be reserved in infinite tortures for suffering. Thus the man will be for ever seen by us who here gazed upon us for a season; and the short joy of those cruel eyes in the persecutions that they made for us will be compensated by a perpetual spectacle, according to the truth of Holy Scripture, which says, “Their worm shall not die, and their fire shall not be quenched; and they shall be for a vision to all flesh.” Isaiah 66:24 And again: “Then shall the righteous men stand in great constancy before the face of those who have afflicted them, and have taken away their labours. When they see it, they shall be troubled with horrible fear, and shall be amazed at the suddenness of their unexpected salvation; and they, repenting and groaning for anguish of spirit, shall say within themselves, These are they whom we had some time in derision, and a proverb of reproach; we fools counted their life madness, and their end to be without honour. How are they numbered among the children of God, and their lot is among the saints! Therefore have we erred from the way of truth, and the light of righteousness has not shined upon us, and the sun rose not on us. We wearied ourselves in the way of wickedness and destruction; we have gone through deserts where there lay no way; but we have not known the way of the Lord. What has pride profited us, or what good has the boasting of riches done us? All those things are passed away like a shadow.” Wisdom 5:1-9 The pain of punishment will then be without the fruit of penitence; weeping will be useless, and prayer ineffectual. Too late they will believe in eternal punishment who would not believe in eternal life.(Treatise V: To Demetrianus 24)
St. Gregory Thaumaturgus ca. 213-270
Aforetime did the devil deride the nature of man with great laughter, and he has had his joy over the times of our calamity as his festal-days. But the laughter is only a three days’ pleasure, while the wailing is eternal; and his great laughter has prepared for him a greater wailing and ceaseless tears, and inconsolable weeping, and a sword in his heart. This sword did our Leader forge against the enemy with fire in the virgin furnace, in such wise and after such fashion as He willed, and gave it its point by the energy of His invincible divinity, and dipped it in the water of an undefiled baptism, and sharpened it by sufferings without passion in them, and made it bright by the mystical resurrection; and herewith by Himself He put to death the vengeful adversary, together with his whole host. What manner of word, therefore, will express our joy or his misery? (On All Saints)
St. Athanasius of Alexandria ca. 297-373
But we impart of what we have learned from inspired teachers who have been conversant with them, who have also become martyrs for the deity of Christ, to your zeal for learning, in turn. And you will also learn about His second glorious and truly divine appearing to us, when no longer in lowliness, but in His own glory—no longer in humble guise, but in His own magnificence—He is to come, no more to suffer, but thenceforth to render to all the fruit of His own Cross, that is, the resurrection and incorruption; and no longer to be judged, but to judge all, by what each has done in the body, whether good or evil; where there is laid up for the good the kingdom of heaven, but for them that have done evil everlasting fire and outer darkness. (On the Incarnation 56)
St. Hilary of Poitiers ca. 300-368
Thus there will be given no rest to the pagans nor will the onset of death bring the peace they desire. Instead, their bodies are destined to suffer eternally because their punishment of eternal fire will be physical. What they endure, along with everything else destined for eternity, will have no end. If pagans are given a body destined for eternity in order to suffer the fire of judgment, how great is the impiety of those saints who doubt the glory of eternity since eternal punishment is certain for sinners! (On Matthew 5.12)
St. Ephrem of Syria ca. 306-373
The children of light
dwell on the heights of Paradise,
and beyond the Abyss
they espy the rich man;
he too, as he raises his eyes,
and calls out to Abrhaham
to have pity on him.
But Abraham, that man so full of pity,
who even had pity on Sodom,
has no pity yonder
for him who showed no pity.
The Abyss severs any love
which might act as a mediary,
thus preventing the love of the just
from being bound to the wicked,
so that the good should not be tortured
by the sight, in Gehenna,
of their children or brothers
or family -
a mother, who denied Christ,
imploring mercy from her son
or her maid or her daughter,
who had all suffered affliction for the sake of
…The children of light reside
in their lofty abode
and, as they gaze on the wicked
they are amazed to what extent these people
have cut off all hope by committing such iniquity.
(The Hymns on Paradise 1.12-14)
St. Cyril of Jerusalem ca. 313-386
We shall be raised therefore, all with our bodies eternal, but not all with bodies alike: for if a man is righteous, he will receive a heavenly body, that he may be able worthily to hold converse with Angels; but if a man is a sinner, he shall receive an eternal body, fitted to endure the penalties of sins, that he may burn eternally in fire, nor ever be consumed. And righteously will God assign this portion to either company; for we do nothing without the body. We blaspheme with the mouth, and with the mouth we pray. With the body we commit fornication, and with the body we keep chastity. With the hand we rob, and by the hand we bestow alms; and the rest in like manner. Since then the body has been our minister in all things, it shall also share with us in the future the fruits of the past. (Catechetical Lectures 18:19)
St. Gregory the Theologian ca. 329-389
I know the glittering sword, Ezekiel 21:9 and the blade made drunk in heaven, bidden to slay, to bring to naught, to make childless, and to spare neither flesh, nor marrow, nor bones. I know Him, Who, though free from passion, meets us like a bear robbed of her whelps, like a leopard in the way of the Assyrians, Hosea 13:7-8 not only those of that day, but if anyone now is an Assyrian in wickedness: nor is it possible to escape the might and speed of His wrath when He watches over our impieties, and His jealousy, which knows to devour His adversaries, pursues His enemies to the death. Hosea 8:3 I know the emptying, the making void, the making waste, the melting of the heart, and knocking of the knees together, Nahum 2:10 such are the punishments of the ungodly. I do not dwell on the judgments to come, to which indulgence in this world delivers us, as it is better to be punished and cleansed now than to be transmitted to the torment to come, when it is the time of chastisement, not of cleansing. (Oration 16:7)
St. Basil of Caesarea ca. 330-379
In one place the Lord declares that “these shall go to eternal punishment” (Mt. 25:46), and in another place He sends some “to the eternal fire prepared for the devil and his angels” (Mt. 25:41); and speaks elsewhere of the fire of gehenna, specifying that it is a place “where their worm dies not, and the fire is not extinguished” (Mk. 9:44-49) and even of old and through the Prophet it was foretold of some that “their worm will not die, nor will their fire be extinguished” (Isa. 66:24). Although these and the like declarations are to be found in numerous places of divinely inspired Scripture, it is one of the artifices of the devil, that many forgetting these and other such statements and utterances of the Lord, ascribe an end to punishment, so that they can sin the more boldly. If, however, there were going to be and end of eternal punishment, there would likewise be and end to eternal life. If we cannot conceive of an end to that life, how are we to suppose there will be and end to eternal punishment? The qualification of “eternal” is ascribed equally to both of them. “For these are going,” He says, “into eternal punishment; the just, however, into eternal life.” (Mt. 25:46) If we profess these things we must recognize that the “he shall be flogged with many stripes” and the “he shall be flogged with few stripes” refer not to an end but to a distinction of punishment. (Rules Briefly Treated 267)
St. Ambrose of Milan ca. 337-397
[H]ow can they dare to reckon the Holy Spirit among all things, since the Lord Himself said: “He who shall blaspheme against the Son of Man, it shall be forgiven him; but he who shall blaspheme against the Holy Ghost shall never be forgiven, either here or hereafter.” Matthew 12:32 How, then, can any one dare to reckon the Holy Spirit among creatures? Or who will so blind himself as to think that if he have injured any creature he cannot be forgiven in any wise? For if the Jews because they worshipped the host of heaven were deprived of divine protection, while he who worships and confesses the Holy Spirit is accepted of God, but he who confesses Him not is convicted of sacrilege without forgiveness: certainly it follows from this that the Holy Spirit cannot be reckoned among all things, but that He is above all things, an offense against Whom is avenged by eternal punishment. (On the Holy Spirit Bk. 1:53)
Blessed Jerome ca. 347-420
If all rational creatures are equal, and by their own free will are, in view of their virtues or of their vices, either raised up to the heights or plunged down to the depths, and after the lengthy passage of infinite ages there will be a restitution of all things and but a single destiny for all soldiers, how far apart will a virgin be from a whore? What difference between the Mother of the Lord – and it impious even to say it – the victims of public licentiousness? Will Gabriel and the devil be the same? The Apostles and the demons the same? The Prophets and the pseudo-prophets the same? Martyrs and their persecutors the same? (Commentaries on Jonas 3,6)
St. John Chrysostom ca. 349-407
There are many men, who form good hopes not by abstaining from their sins, but by thinking that hell is not so terrible as it is said to be, but milder than what is threatened, and temporary, not eternal; and about this they philosophize much. But I could show from many reasons, and conclude from the very expressions concerning hell, that it is not only not milder, but much more terrible than is threatened. But I do not now intend to discourse concerning these things. For the fear even from bare words is sufficient, though we do not fully unfold their meaning. But that it is not temporary, hear Paul now saying, concerning those who know not God, and who do not believe in the Gospel, that “they shall suffer punishment, even eternal destruction.” How then is that temporary which is everlasting? “From the face of the Lord,” he says. What is this? He here wishes to say how easily it might be. For since they were then much puffed up, there is no need, he says, of much trouble; it is enough that God comes and is seen, and all are involved in punishment and vengeance. His coming only to some indeed will be Light, but to others vengeance. (Homily 3 on 2nd Thessalonians)
Blessed Augustine ca. 354-430
It is in vain, then, that some, indeed very many, make moan over the eternal punishment, and perpetual, unintermitted torments of the lost, and say they do not believe it shall be so; not, indeed, that they directly oppose themselves to Holy Scripture, but, at the suggestion of their own feelings, they soften down everything that seems hard, and give a milder turn to statements which they think are rather designed to terrify than to be received as literally true. For “Hath God” they say, forgotten to be gracious? Has He in anger shut up His tender mercies? Now, they read this in one of the holy psalms. But without doubt we are to understand it as spoken of those who are elsewhere called “vessels of mercy,” because even they are freed from misery not on account of any merit of their own, but solely through the pity of God. Or, if the men we speak of insist that this passage applies to all mankind, there is no reason why they should therefore suppose that there will be an end to the punishment of those of whom it is said, “These shall go away into everlasting punishment;” for this shall end in the same manner and at the same time as the happiness of those of whom it is said, “but the righteous unto life eternal.” But let them suppose, if the thought gives them pleasure, that the pains of the damned are, at certain intervals, in some degree assuaged. For even in this case the wrath of God, that is, their condemnation (for it is this, and not any disturbed feeling in the mind of God that is called His wrath), abides upon them; that is, His wrath, though it still remains, does not shut up His tender mercies; though His tender mercies are exhibited, not in putting an end to their eternal punishment, but in mitigating, or in granting them a respite from, their torments; for the psalm does not say, “to put an end to His anger,” or, “when His anger is passed by,” but “in His anger.” Now, if this anger stood alone, or if it existed in the smallest conceivable degree, yet to be lost out of the kingdom of God, to be an exile from the city of God, to be alienated from the life of God, to have no share in that great goodness which God has laid up for them that fear Him, and has wrought out for them that trust in Him, would be a punishment so great, that, supposing it to be eternal, no torments that we know of, continued through as many ages as man’s imagination can conceive, could be compared with it.
This perpetual death of the wicked, then, that is, their alienation from the life of God, shall abide for ever, and shall be common to them all, whatever men, prompted by their human affections, may conjecture as to a variety of punishments, or as to a mitigation or intermission of their woes; just as the eternal life of the saints shall abide for ever, and shall be common to them all, whatever grades of rank and honor there may be among those who shine with an harmonious effulgence. (Enchiridion 112-113)
St. Cyril of Alexandria ca. 376-444
And this too we must bear in mind, that the crowns are to be won by labour. It is strong exertion united with skill that perfects those mighty athletes in the games. It is courage and a brave mind that are most serviceable to those who are skilled in battles: while the man who throws away his shield is ridiculed even by the foe: and if the runaway live, he leads a life of disgrace. But he who was steadfast in the battle, and stood stoutly and courageously with all his might against the enemy, is honoured if he win the victory; and if he fall, is looked upon with admiration. And so ought we to reckon for ourselves; for to endure patiently, and maintain the conflict with courage, brings with it great reward, and is highly desirable, and wins for us the blessings bestowed by God: while to refuse to suffer death in the flesh for the love of Christ, brings upon us lasting, or rather never-ending punishment. For the wrath of man reaches at most to the body, and the death of the flesh is the utmost that they can contrive against us: but when God punishes, the loss reaches not to the flesh alone;—-how could it?—-but the wretched soul also is cast alone; with it into torments. (Sermon 87, On Luke)
St. Patrick of Ireland ca. 387-493
Far from the love of God is a man who hands over Christians to the Picts and Scots. Ravening wolves have devoured the flock of the Lord, which in Ireland was indeed growing splendidly with the greatest care; and the sons and daughters of kings were monks and virgins of Christ — I cannot count their number. Wherefore, be not pleased with the wrong done to the just; even to hell it shall not please (Sirach 9:3). Who of the saints would not shudder to be merry with such persons or to enjoy a meal with them? They have filled their houses with the spoils of dead Christians, they live on plunder. They do not know, the wretches, that what they offer their friends and sons as food is deadly poison, just as Eve did not understand that it was death she gave to her husband. So are all that do evil: they work death as their eternal punishment. (Letter to Coroticus)
St. Gregory the Dialogist ca. 540-604
GREGORY. Certain it is, and without all doubt most true, that as the good shall have no end of their joys, so the wicked never any release of their torments: for our Saviour himself saith: The wicked shall go into everlasting punishment, and the just into everlasting life. Seeing, then, true it is, that which He hath promised to His friends: out of all question false it cannot be, that which He hath threatened to His enemies.
PETER. What if it be said that He did threaten eternal pain to wicked livers, that He might thereby restrain them from committing of sins?
GREGORY. If that which He did threaten be false, because His intent was by that means to keep men from wicked life: then likewise must we say that those things are false which He did promise: and that His mind was thereby to provoke us to virtue. But what man, though mad, dare presume so to say? For if He threatened that which he meant not to put into execution: whiles we are desirous to make Him merciful, enforced we are likewise (which is horrible to speak) to affirm Him to be deceitful.
PETER. Willing I am to know how that sin can justly be punished without end, which had an end when it was committed.
GREGORY. This which you say might have some reason, if the just judge did only consider the sins committed, and not the minds with which they were committed: for the reason why wicked men made an end of sinning was, because they also made an end of their life: for willingly they would, had it been in their power, have lived without end, that they might in like manner have sinned without end. For they do plainly declare that they desired always to live in sin, who never, so long as they were in this world, gave over their wicked life: and therefore it belongeth to the great justice of the supreme judge, that they should never want torments and punishment in the next world, who in this would never give over their wicked and sinful life.
PETER. But no judge that loveth justice taketh pleasure in cruelty: and the end why the just master commandeth his wicked servant to be punished is, that he may give over his lewd life. If, then, the wicked that are tormented in hell fire never come to amend themselves, to what end shall they always burn in those flames?
GREGORY. Almighty God, because He is merciful and full of pity, taketh no pleasure in the torments of wretched men: but because He is also just, therefore doth He never give over to punish the wicked. All which being condemned to perpetual pains, punished they are for their own wickedness: and yet shall they always there burn in fire for some end, and that is, that all those which be just and God’s servants may in God behold the joys which they possess, and in them see the torments which they have escaped: to the end that they may thereby always acknowledge themselves grateful to God for His grace, in that they perceive through His divine assistance, what sins they have overcome, which they behold in others to be punished everlastingly.
PETER. And how, I pray you, can they be holy and saints, if they pray not for their enemies, whom they see to lie in such torments? when it is said to them: Pray for your enemies.
GREGORY. They pray for their enemies at such time as their hearts may be turned to fruitful penance, and so be saved: for what purpose else do we pray for our enemies, but, as the Apostle saith, that God may give them repentance to know the truth, and recover themselves from the devil, of whom they are held captive at his will?
PETER. I like very well of your saying: for how shall they pray for them, who by no means can be converted from their wickedness, and brought to do the works of justice?
GREGORY. You see, then, that the reason is all one, why, in the next life, none shall pray for men condemned for ever to hell fire: that there is now of not praying for the devil and his angels, sentenced to everlasting torments: and this also is the very reason why holy men do not now pray for them that die in their infidelity and known wicked life: for seeing certain it is that they be condemned to endless pains, to what purpose should they pray for them, when they know that no petition will be admitted of God, their just judge? And therefore, if now holy men living upon earth take no compassion of those that be dead and damned for their sins, when as yet they know that themselves do some thing through the frailty of the flesh, which is also to be judged: how much more straightly and severely do they behold the torments of the damned, when they be themselves delivered from all vice of corruption, and be more nearly united to true justice itself: for the force of justice doth so possess their souls, in that they be so intrinsical with the most just judge, that they list not by any means to do that which they know is not conformable to his divine pleasure. (Dialogues Bk. 4:44)
Mat 25:11-12 Afterward the other virgins came also, saying, ‘Lord, lord, open to us.’But he answered, ‘Truly, I say to you, I do not know you.’
The door of the kingdom will close forever to those left outside, who will then weep; that door is now open to all penitents. There will be repentance then, but it will be fruitless. The Lord does not hear virgins call Him, because once the door of the kingdom is closed they can no longer approach Him, Who was so formerly approachable. (The Ten Virgins, Orthodox New Testament: Endnotes-Matthew pg. 121)
5th Ecumenical Council: Second Council of Constantinople 553
The Anathemas Against Origen
If anyone asserts the fabulous pre-existence of souls, and shall assert the monstrous restoration which follows from it: let him be anathema. (Anathema 1)
The Anathemas of the Emperor Justinian Against OrigenIf anyone says or thinks that Christ the Lord in a future time will be crucified for demons as he was for men, let him be anathema. (Anathema 7)
If anyone says or thinks that the punishment of demons and of impious men is only temporary, and will one day have an end, and that a restoration (ἀποκατάστασις) will take place of demons and of impious men, let him be anathema. (Anathema 9)
St. Maximus the Confessor ca. 580-662
Indeed there exists but one happiness, a communion of life with the Word, the loss of which is an endless punishment which goes on for all eternity. And that is why abandoning his body and whatever is the body’s he strives intensely toward that communion of life with God, thinking that the only loss – even he were master of everything on earth – would be in the failure of the deification by grace which he pursues. (Commentary on the Our Father)
St. Andrew of Caesarea ca. 6th cent.
Rev 14:11 And the smoke of their torment goes up forever and ever, and they have no rest, day or night, these worshipers of the beast and its image, and whoever receives the mark of its name.
This smoke must imply either the labored breath that cornes out along with the groaning of those being punished emanating up from below, or the smoke coming forth from the fire punishing those who have fallen. It is to ascend forever and ever, it says, that we might learn that it is endless, just as the bliss of the righteous (will be endless), in like manner also, the torment of the sinners. (Commentary on the Apocalypse)
Rev 19:3 Once more they cried out, “Hallelujah! The smoke from her goes up forever and ever.”
And the smoke rises forever and ever from the city signifies either the uninterrupted never-to-be-forgotten (nature) of the punishments coming upon her into perpetuity, or the judgments partly rendered to her, to be tormented more fittingly but nevertheless eternally in the future. (ibid.)
Rev. 19:21 And the rest were slain by the sword of Him Who sits upon the horse, the sword which cornes from his mouth, and ail the birds were gorged with their flesh.
There are two deaths; the first is the separation of the soul and the body, the second is being cast into Gehenna. If (this is applied to) those (who are) together with the Antichrist, it is said they will be led to the first death in the flesh by the sword of God, that is, by his command, and thus afterward the second will follow, if this is correct. If it is not thus, they will (only) participate in the second death, the eternal torment with the ones who had deceived them. (ibid.)
Bede the Venerable ca. 673-735
For the fire which once punished the people of Sodom also plainly shows what the wicked are going to suffer without end. And the fact that their smoke-producing land remains, that its most admirable fruits have ashes and a bad smell within, clearly signifies to all ages that although bodily pleasure delights the minds of the foolish for the present, nevertheless in what concerns that which cannot be seen restains for itelf nothing except that the smoke of its torments rise up for ever and ever. (Commentary on 2nd Peter)
St. John Damascene ca. 676-749
All wickedness, then, and all impure passions are the work of their mind. But while the liberty to attack man has been granted to them, they have not the strength to over-master any one: for we have it in our power to receive or not to receive the attack. Wherefore there has been prepared for the devil and his demons, and those who follow him, fire unquenchable and everlasting punishment Matthew 25:41 .
Note, further, that what in the case of man is death is a fall in the case of angels. For after the fall there is no possibility of repentance for them, just as after death there is for men no repentance. (An Exposition of the Orthodox Faith Book II. 4)
St. Symeon the New Theologian ca. 949-1022
So let us see, if you are willing, who is he “who hates to be reformed” and who it is who “casts His words behind him.” He who does not obey God’s laws hates the instruction that comes from the words of the Lord. He “stops his ears” (Ps. 58:5) so that he may not hear the word about the final retribution for sinners or about that eternal fire and the punishments of hell and that everlasting condemnation, from which retribution he who has fallen into cannot escape. (The Discourses, Discourse 7.1)
St. Theophylact of Ochrid ca. 1055-1107
A conclusion to be drawn against the Origenists who say that there will be a time when there is an end to hell, that the sinners will be united with the righteous and with God, and thus God will be all in all. Let us hear what Abraham says, that they who would pass from hence to you, or from thence to us, cannot. Therefore, it is impossible for anyone to go from the place apportioned to the righteous to the place of sinners, and likewise, Abraham teaches us, it is impossible to go from the place of punishment to the place of the righteous. And Abraham, I presume, is more trustworthy than Origen. (Explanation of the Gospel According to St. Luke, Chap. 16)
St. Gregory Palamas ca. 1296-1359
Although in the future restoration, when the bodies of the righteous shall be raised, the bodies of the lawless and sinners will also be raised, they will be raised only so as to be subjected to the ‘second death’, that is, to eternal torment, the unsleeping worm (Mk. 9:48), the gnashing of teeth (Mt. 8:12), the outer and inpenetrable darkness (Mt. 8:12), to dark and inextinguishable Gehenna (Mt. 5:22). The prophet says, ‘The lawless and the sinners shall be burnt together, and there shall be none to quench (Is. 1:31; cf. Jer. 4:4)’. For this is the ‘second death’, as John teaches us in his Apocalypse. (To the Nun Xenia, P.G. 150:1043-1088)