Theodoret of Cyrus: Sola Fide and the Ordo Salutis

By grace, in fact, you are saved through faith (v.8): the grace of God regaled us with these good things; we had only faith to offer, but divine grace worked with it. He went on in this vein: This is no doing of yours: it is the gift of God, not from your works lest anyone boast (vv.8-9): we have not believed of our own volition; rather, we made our approach when called, and when we did he did not require of us purity of life - instead, he accepted faith alone and granted us forgiveness of sins. In other words, we are of his making, created in Christ Jesus for good works for which God prepared us so that we should walk in him (v.10). He used created here of the regeneration: he called us (he is saying) out of his ineffable goodness; we responded, and by coming to faith we attained salvation.

- Theodoret of Cyrus (around A.D. 393 to around A.D. 457), Commentary on the Letter to the Ephesians, Chapter 2, in Theodoret of Cyrus, Commentary on the Letters of St. Paul, Volume 2, p. 39 (2001), Robert C. Hill translator.