To correct any misunderstanding the people might have had about this healing, Peter “addressed the people: “Men of Israel, why stare at us, as though by our own power or piety we have made him walk (3:12). This was a moment to proclaim the power of God and the truth that they had killed the “Author of life” - Jesus (3:15). Through their ignorance, what took place in the death of Jesus, “God foretold by the mouth of all the prophets, that His Christ (Anointed One) would suffer, He thus fulfilled” (3:18).
There can only be one response to the convicting words of Scripture: “REPENT…AND TURN BACK, THAT YOUR SINS MAY BE BLOTTED OUT” (3:19). In a few verses later, Luke records that “many of those who heard the word believed, and the number of men came to about five thousand” (4:4). Peter was absolutely right in turning their attention from the miracle to the power of the Word. God uses miracles, but transformation of the heart comes from the power of God’s Word.
Many emphasize miracles, but fail to realize that any miracle which is truly the power of God only happens so the heart is drawn to the person of Jesus and the Word of God.