The Armchair Theologian published an excellent
article with several excerpts from various church fathers, proving a number of them believed in at least some form justification by faith alone. Following are excerpts from John Chrysostom:
“Let us see, however, whether the brigand gave evidence of effort and upright deeds and a good yield. Far from his being able to claim even this, he made his way into paradise before the apostles with a mere word, on the basis of faith alone, the intention being for you to learn that it was not so much a case of his sound values prevailing as the Lord’s lovingkindness being completely responsible. What, in fact, did the brigand say? What did he do? Did he fast? Did he weep? Did he tear his garments? Did he display repentance in good time? Not at all: on the cross itself after his utterance he won salvation. Note the rapidity: from cross to heaven, from condemnation to salvation. What were those wonderful words, then? What great power did they have that they brought him such marvelous good things? “Remember me in your kingdom.” What sort of word is that? He asked to receive good things, he showed no concern for them in action; but the one who knew his heart paid attention not to the words but to the attitude of mind.” —John Chrysostom, (347 – 407 AD), Sermon 7 on Genesis, in St. John Chrysostom, Eight Sermons on the Book of Genesis, pp. 123-24 (2004), Robert C. Hill translator.
“They said that he who adhered to faith alone was cursed; but he, Paul, shows that he who adhered to faith alone is blessed.”- St. John Chrysostom (347 – 407 AD) (Homily on Galatians 3)
“But he calls it their ‘own righteousness,’ either because the Law was no longer of force, or because it was one of trouble and toil. But this he calls God’s righteousness, that from faith, because it comes entirely from the grace from above, and because men are justified in this case, not by labors, but by the gift of God.”- St. John Chrysostom (347 – 407 AD) (Homily 17 on Romans 10:3)
“Here he shows God’s power, in that He has not only saved, but has even justified, and led them to boasting, and this too without needing works, but looking for faith only.” Homily 7 on Romans- St. John Chrysostom (347 – 407 AD)
“For you believe the faith; why then do you add other things, as if faith were not sufficient to justify? You make yourselves captive, and you subject yourself to the law.”- St. John Chrysostom (347 – 407 AD) (Epistle to Titus, Homily 3, PG 62.651)
"But what is the ‘law of faith?’ It is, being saved by grace. Here he shows God’s power, in that He has not only saved, but has even justified, and led them to boasting, and this too without needing works, but looking for faith only.” St. John Chrysostom, (347 – 407 AD), Homilies on Romans 3
“We need none of those legal observances, he says; faith suffices to obtain for us the Spirit, and by Him righteousness, and many and great benefits.”- Chrysostom (347 – 407 AD), Homilies on Galatians 4
“And he well said, “a righteousness of mine own,” not that which I gained by labor and toil, but that which I found from grace. If then he who was so excellent is saved by grace, much more are you. For since it was likely they would say that the righteousness which comes from toil is the greater, he shows that it is dung in comparison with the other. For otherwise I, who was so excellent in it, would not have cast it away, and run to the other. But what is that other? That which is from the faith of God, i.e. it too is given by God. This is the righteousness of God; this is altogether a gift. And the gifts of God far exceed those worthless good deeds, which are due to our own diligence.” Chrysostom, (347 – 407 AD) Homily on Philippians 3
“God does not wait for time to elapse after repentance. You state your sin, you are justified. You repented, you have been shown mercy.”- St. John Chrysostom, (347 – 407 AD), Homily 7 On Repentance and Compunction, p. 95 in FOTC, vol. 96.