John Chrysostom
Trying to prove this event, he immediately mentions the miracle: "before you all," he says. But if faith in Him did everything because the lame man believed in Him, why did the apostle not say "by the name"?
Why did he say, "in the name"? Because they did not yet dare to say, "faith in Him." And so that the expression "through faith" should not seem lowly, he added, "through faith in His name."
After saying this first, he then says, "and the faith which is from Him has given him this perfect soundness." See how he shows that he also spoke those former words by condescension to them.
Indeed, the One whose name raised up the lame man, who differed in nothing from a dead man, had no need of another for His own resurrection.
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Notice how everywhere he appeals to their testimony. Above he said, "as you yourselves know," and, "in your midst" (Acts 2:22).
Again he says, "whom you see and know," and, "this before you all." Although they did not know that the lame man stood whole in the name of Christ, they did know that he had been lame.
Those who performed the deed themselves confessed that he had been strengthened not by their own power, but by Christ's. If this had not been so, and if they had not truly been convinced that Christ had risen, they would not have preferred the glory of a dead man to their own.
They especially would not have done so when the Jews were looking upon them as the authors of the miracle.