John Chrysostom
"The Author of life," he says. By this he prepares faith in the resurrection. "This One God raised from the dead."
So that no one might say, "How is this evident?" he now refers no longer to the prophets, but to himself, because he had already become worthy of belief.
Before, when he said that Christ had risen, he brought David as witness. Now, after saying the same thing, he refers to the apostolic choir: "of which," he says, "we are witnesses."
Again see how veiledly he speaks of His power, showing that He raised Himself from the dead. In the former preaching he said, "because it was not possible for Him to be held by it" (Acts 2:24).
So here he says, "You killed the Author of life." Therefore He did not receive life from another person.
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As the author of evil must be the one who begot evil, and the author of murder the one who first introduced it, so the Author of life is He who has life from Himself.
"This One," he says, "God raised up." See Acts 3:14.