When the Jews, convicted of their sins, were deeply troubled and cried out, "What shall we do?" (Acts 2:37), how does Peter guide them? Does he tell them to go and improve their pride, anger, malice, cruelty, and so on? No, he knows that's not their main task right now. Instead, he calls them to conversion and faith in Christ in general (v. 38). First, let the soul be fully converted, and then, looking "on him whom they pierced" (John 19:37), humility and self-improvement will follow.
