For the priestly office is indeed discharged on earth, but it ranks among heavenly ordinances; and very naturally so: for neither man, nor angel, nor archangel, nor any other created power, but the Paraclete Himself, instituted this vocation, and persuaded men while still abiding in the flesh to represent the ministry of angels. Wherefore the consecrated priest ought to be as pure as if he were standing in the heavens themselves in the midst of those powers. Fearful, indeed, and of most awful import, were the things which were used before the dispensation of grace, as the bells, the pomegranates, the stones on the breastplate and on the ephod, the girdle, the mitre, the long robe, the plate of gold, the holy of holies, the deep silence within. But if any one should examine the things which belong to the dispensation of grace, he will find that, small as they are, yet are they fearful and full of awe, and that what was spoken concerning the law is true in this case also, that what has been made glorious has no glory in this respect by reason of the glory which excels. 2 Corinthians 3:10 For when you see the Lord sacrificed, and laid upon the altar, and the priest standing and praying over the victim, and all the worshippers empurpled with that precious blood, can you then think that you are still among men, and standing upon the earth? Are you not, on the contrary, straightway translated to Heaven, and casting out every carnal thought from the soul, do you not with disembodied spirit and pure reason contemplate the things which are in Heaven? Oh! What a marvel! What love of God to man! He who sits on high with the Father is at that hour held in the hands of all, and gives Himself to those who are willing to embrace and grasp Him. And this all do through the eyes of faith! Do these things seem to you fit to be despised, or such as to make it possible for any one to be uplifted against them?
Would you also learn from another miracle the exceeding sanctity of this office? Picture Elijah and the vast multitude standing around him, and the sacrifice laid upon the altar of stones, and all the rest of the people hushed into a deep silence while the prophet alone offers up prayer: then the sudden rush of fire from Heaven upon the sacrifice:— these are marvellous things, charged with terror. Now then pass from this scene to the rites which are celebrated in the present day; they are not only marvellous to behold, but transcendent in terror. There stands the priest, not bringing down fire from Heaven, but the Holy Spirit: and he makes prolonged supplication, not that some flame sent down from on high may consume the offerings, but that grace descending on the sacrifice may thereby enlighten the souls of all, and render them more refulgent than silver purified by fire. Who can despise this most awful mystery, unless he is stark mad and senseless? Or do you not know that no human soul could have endured that fire in the sacrifice, but all would have been utterly consumed, had not the assistance of God’s grace been great.
For if any one will consider how great a thing it is for one, being a man, and compassed with flesh and blood, to be enabled to draw near to that blessed and pure nature, he will then clearly see what great honor the grace of the Spirit has vouchsafed to priests; since by their agency these rites are celebrated, and others nowise inferior to these both in respect of our dignity and our salvation. For they who inhabit the earth and make their abode there are entrusted with the administration of things which are in Heaven, and have received an authority which God has not given to angels or archangels. For it has not been said to them, Whatsoever you shall bind on earth shall be bound in Heaven, and whatsoever you shall loose on earth shall be loosed in Heaven. Matt. 18:18 They who rule on earth have indeed authority to bind, but only the body: whereas this binding lays hold of the soul and penetrates the heavens; and what priests do here below God ratifies above, and the Master confirms the sentence of his servants. For indeed what is it but all manner of heavenly authority which He has given them when He says, Whose sins ye remit they are remitted, and whose sins ye retain they are retained? John 20:23 What authority could be greater than this? The Father has committed all judgment to the Son? John 5:22 But I see it all put into the hands of these men by the Son. For they have been conducted to this dignity as if they were already translated to Heaven, and had transcended human nature, and were released from the passions to which we are liable. Moreover, if a king should bestow this honor upon any of his subjects, authorizing him to cast into prison whom he pleased and to release them again, he becomes an object of envy and respect to all men; but he who has received from God an authority as much greater as heaven is more precious than earth, and souls more precious than bodies, seems to some to have received so small an honor that they are actually able to imagine that one of those who have been entrusted with these things will despise the gift. Away with such madness! For transparent madness it is to despise so great a dignity, without which it is not possible to obtain either our own salvation, or the good things which have been promised to us. For if no one can enter into the kingdom of Heaven except he be regenerate through water and the Spirit, and he who does not eat the flesh of the Lord and drink His blood is excluded from eternal life, and if all these things are accomplished only by means of those holy hands, I mean the hands of the priest, how will any one, without these, be able to escape the fire of hell, or to win those crowns which are reserved for the victorious?
These verily are they who are entrusted with the pangs of spiritual travail and the birth which comes through baptism: by their means we put on Christ, and are buried with the Son of God and become members of that blessed Head. Wherefore they might not only be more justly feared by us than rulers and kings, but also be more honored than parents; since these begot us of blood and the will of the flesh, but the others are the authors of our birth from God, even that blessed regeneration which is the true freedom and the sonship according to grace. The Jewish priests had authority to release the body from leprosy, or, rather, not to release it but only to examine those who were already released, and you know how much the office of priest was contended for at that time. But our priests have received authority to deal, not with bodily leprosy, but spiritual uncleanness— not to pronounce it removed after examination, but actually and absolutely to take it away. Wherefore they who despise these priests would be far more accursed than Dathan and his company, and deserve more severe punishment. For the latter, although they laid claim to the dignity which did not belong to them, nevertheless had an excellent opinion concerning it, and this they evinced by the great eagerness with which they pursued it; but these men, when the office has been better regulated, and has received so great a development, have displayed an audacity which exceeds that of the others, although manifested in a contrary way. For there is not an equal amount of contempt involved in aiming at an honor which does not pertain to one, and in despising such great advantages, but the latter exceeds the former as much as scorn differs from admiration. What soul then is so sordid as to despise such great advantages? None whatever, I should say, unless it were one subject to some demoniacal impulse. (On the Priesthood Bk. 3.4-6)