Acts of the Apostles 2:14, 36-38

Then Peter stepped forward with the eleven other apostles and shouted to the crowd, “Listen carefully, all of you, fellow Jews and residents of Jerusalem! Make no mistake about this.

“So let everyone in Israel know for certain that God has made this Jesus, whom you crucified, to be both Lord and Messiah!” Peter’s words pierced their hearts, and they said to him and to the other apostles, “Brothers, what should we do?” Peter replied, “Each of you must repent of your sins and turn to God, and be baptized in the name of Jesus Christ for the forgiveness of your sins. Then you will receive the gift of the Holy Spirit.