In his Confessions, Augustine tells how he used the psalms in a period of retreat between his conversion and baptism. "What utterances sent I unto Thee, my God, when I read the Psalms of David, those faithful songs and sounds of devotion.... What utterances I used to send up unto Thee in those Psalms, and how was I inflamed toward Thee by them" (IX, 4).
For Augustine it was a time of preparation for a different life, of initiation into a new existence, a period in which habits of thought, customs of practice, and feelings about self and others and the world had to be reconstituted. As part of the transformation, he was learning a new language.
He spoke the psalms to and before the Christian God, who was now source and subject of his faith and life. He took their vocabulary and sentences as his own. He identified himself with the speaker of the psalms. He said the psalms as his words, let his feelings be evoked and led by their language, spoke the words that resonated in his own consciousness in concord with those of the psalms. He was acquiring a language world that went with his new identity as a Christian. It was the vocabulary of prayer and praise, the "first order" language that expressed the sense of self and world that comes with faith in the God to whom, of whom, and for whom the psalms speak.
James L. Mays, The LORD Reigns - A Theological Handbook to the Psalms, p.3
