Ambrosiaster : Now the Jews deserved to be punished all the more, because they did not know Christ the Creator, either by nature or by the law. He is our head. At God's behest we recognize Him as the author of our life. And to this gift God adds the Gentiles, indiciating that we have been saved by the grace of God. John Chrysostom : Observe again how he speaks covertly concerning Christ's power, showing that He raised Himself: just as in his first discourse he had said, "Because it was not possible that He should be holden of it," so here he says, "And killed the Prince of Life." It follows that the Life He had was not from another. The prince (or author) of evil would be he that first brought forth evil; the prince or author of murder, he who first originated murder; so also the Prince (or Author) of Life must be He Who has Life from Himself. "Whom God raised up," he continues: and now that he has uttered this, he adds, "And his name, upon faith in his name, hath made this man strong, whom ye see and know; yea, the faith which is by Him hath given Him this perfect soundness." — Homily on Acts 9 John Chrysostom : Peter sharpens his accusation of them by the following contrasts: (1) This healing at which you wonder is to the glory of Christ, not of us. (2) God has glorified whom you have betrayed and denied. (3) This you did though Pilate himself would have released him. (4) You preferred to kill the holy and just one and let a murderer go free. (5) You sought to put to death the Author of Life. — Homily on Acts 9 Oecumenius : Saying, "the Author of life," he shows that Christ himself raised himself. But he does not ground the resurrection on the testimonies of prophets; rather, since he was credible to them, he grounds it on the band of the apostles. And when he has suspended the charge, he grieves intensely, then again relaxes, urging them to repentance, because the sin was out of ignorance and folly, and because what had been ordained from the beginning and spoken through the prophets was not to be passed over. And since he has gone this far, he already even explicitly introduces repentance as something to be taken up necessarily, for the removal of sins, and for the enjoyment and possession of the endless goods that are shared by those who, through repentance and good works, have prospered. — Commentary on Acts Pseudo-Clement : To the only God, invisible, Father of truth, who sent forth to us the Saviour and Author of immortality, through whom He also manifested to us the truth and the heavenly life, to Him be glory for ever and ever. Amen. — Second Epistle To The Corinthians (Pseudo-Clement)