Peter told the people to repent.

Acts 3:17-26

17 “Now, my fellow-countrymen, I know that you and your leaders did that to Jesus because you and they did not know that he was the Messiah. 18 However, your putting him to death was what God had predicted that people would do. Long ago he told all the prophets [MTY] to write what people would do to the Messiah. They wrote that the Messiah, whom God would send, would suffer and die. 19 So, turn away from your sinful behavior and ask God to help you do what pleases him, in order that he may completely forgive you for your sins. 20 If you do that, there will be times when you will know that the Lord God is helping you. And some day he will again send back to earth the Messiah, whom he appointed for you. That person is Jesus. 21 Jesus must stay in heaven until the time when God will cause all that he has created to become new. Long ago God promised to do that, and he chose holy prophets to tell that to people. 22 For example, the prophet Moses said this about the Messiah: ‘The Lord ◄your God/the God whom you worship► will cause someone to become a prophet to tell you God’s message. God will send him as he sent me, and he will be from among your own people. You must listen to everything that this prophet tells you and obey him [SYN]. 23 Those who do not listen to that prophet and obey him will no longer belong to God’s people, and God will get rid of them’.” 24 Peter continued, “All the prophets have told about what would happen during the time [MTY] in which we(inc) are living. Those prophets include Samuel and all the others who later also spoke about these events before they happened. 25 You as well as we(exc) are the people to whom God sent the Messiah, as the prophets said [MTY] that he would. And when God strongly promised to bless our ancestors, he also surely promised to bless you. He said to Abraham concerning the Messiah, ‘I will bless all people on the earth as a result of what your descendant will do.’” 26 Peter concluded, “So when God sent to the earth ◄Jesus, the one who always obeys him/his servant Jesus►, he sent him first to you Israelites to bless you. God will enable you to stop doing what is wicked and to start doing what pleases him.”