John Chrysostom
The providence of God arranged that they did not know the young man would overhear. And again human care is observed. See: Paul allows no one to learn this, not even the centurion, lest the matter become public. But the centurion took the young man and brought him to the tribune. The tribune rightly orders the matter concealed, so that no one would know it. Then he tells the centurions what must be done. See, even after this appearance the Lord allows Paul again to be saved in a human way. It is worthy of wonder that Paul was not troubled and did not say, 'What does this mean? Have I been deceived by Christ?' No, he neither thought nor felt anything of the sort. He only believed. Yet while believing, he did not sleep. He did not fail to do what could be done with the help of human wisdom.
What then did Paul do? He was not troubled, but understood that this was the work of God. Entrusting everything to Him, he received salvation through this very thing. See how God arranged everything for good. The young man reported the plot, he was believed, and in this way Paul was saved.