You see, then, that the grace of the one Spirit is common to every writer and all the books of Scripture, and differs in its expression only as need requires and the Spirit wills. Obviously, therefore, the only thing that matters is for each writer to hold fast unyieldingly the grace he personally has received and so fulfil perfectly his individual mission. And, among all the books, the Psalter has certainly a very special grace, a choiceness of quality well worthy to be pondered; for, besides the characteristics which it shares with others, it has this peculiar marvel of its own, that within it are represented and portrayed in all their great variety the movements of the human soul. It is like a picture, in which you see yourself portrayed, and seeing, may understand and consequently form yourself upon the pattern given. Elsewhere in the Bible you read only that the Law commands this or that to be done, you listen to the Prophets to learn about the Saviour’s coming, or you turn to the historical books to learn the doings of the kings and holy men; but in the Psalter, besides all these things, you learn about yourself. You find depicted in it all the movements of your soul, all its changes, its ups and downs, its failures and recoveries. Moreover, whatever your particular need or trouble, from this same book you can select a form of words to fit it, so that you do not merely hear and then pass on, but learn the way to remedy your ill. Prohibitions of evil-doing are plentiful in Scripture, but only the Psalter tells you how to obey these orders and abstain from sin. Repentance, for example, is enjoined repeatedly; but to repent means to leave off sinning, and it is the Psalms that show you how to set about repenting and with what words your penitence may be expressed. Again, Saint Paul says, Tribulation worketh endurance, and endurance experience, and experience hope, and hope maketh not ashamed [Rom 5:3, 5]; but it is in the Psalms that we find written and described how afflictions should be borne, and what the afflicted ought to say, both at the time and when his troubles cease: the whole process of his testing is set forth in them and we are shown exactly with what words to voice our hope in God. Or take the commandment, In everything give thanks. [1 Thess 5:18] The Psalms not only exhort us to be thankful, they also provide us with fitting words to say. We are told, too, by other writers that all who would live godly in Christ must suffer persecution;[2 Tim 3:12] and here again the Psalms supply words with which both those who flee persecution and those who suffer under it may suitably address themselves to God, and it does the same for those who have been rescued from it. We are bidden elsewhere in the Bible also to bless the Lord and to acknowledge Him: here in the Psalms we are shown the way to do it, and with what sort of words His majesty may meetly be confessed. In fact, under all the circumstances of life, we shall find that these divine songs suit ourselves and meet our own souls’ need at every turn.
…I have heard…from wise men, that in old days in Israel they put daemons to flight by reading of the Scriptures only, and in the same way uncovered plots made by them against men.
For this reason he rebuked as being worthy of the utmost condemnation people who neglect the Scriptures, while making use of impressive words from other sources for the purposes of exorcism so-called. [Acts 19:14-16] Those who did that were playing with the sacred words, he said, and offering themselves as to daemons, as did those Jews, the sort they tried in that way to exorcise the man at Ephesus. On the other hand, daemons fear the words of holy men and cannot bear them; for the Lord Himself is in the words of Scripture and Him they cannot bear, as they showed when they cried out to Christ, I pray you, torment me not before the time. [Lk 8:28; Mt 8:29] In the same way Paul commanded the unclean spirits, [Acts 16:18] and daemons were subject to the disciples. [Lk 10:17] The hand of the Lord was on Elisha the prophet also, and he prophesied about the waters to three kings, when the minstrel played and sang according to His bidding.[4 Kings 3:15(2 Kings 3:15)] So also is it with us today: if any one have at heart the interests of those who suffer, let him use these words, and he will both help the suffer, let him use these words, and he will both help the sufferers more and at the same time prove his own faith to be true and strong; thus God, perceiving it, will grant the suppliants perfect health. Well knew the holy Psalmist that, when he said in Psalm 119, I will meditate in Thy judgements: and I will not forget Thy words; and again, Thy statutes were my songs in the place of my sojourning. For with these words they all worked out their own salvation, saying, If Thy law were not my meditation, then had I perished in my humiliation. Paul also strengthened his disciple with like words, saying, Ponder these things, abide in them, that thy progress may be manifest.[1 Tim 4:15]
And so you too…pondering the Psalms and reading them intelligently, with the Spirit as your guide, will be able to grasp the meaning of each one, even as you desire. And you will strive also to imitate the lives of those God-bearing saints who spoke them at the first. (To Marcellinus, On the Interpretation of the Psalms)