Acts 2:36-41

Then Peter said, "Let the whole nation of Israel know for certain that GOD has made this JESUS, whom you crucified, to be both LORD and CHRIST." Now when they heard this, they were cut to the heart, and said to Peter and to the rest of the apostles, "Brothers, what shall we do?" And Peter said to them, "Each and every one of you must repent and be baptized in the name of JESUS CHRIST for the forgiveness of your sins, and you will receive the gift of the HOLY SPIRIT. This promise is to you and to your children and to all who are far away: to all whom the LORD our GOD will call." Peter continued preaching, warning them, pleading with them, "Save yourselves from this corrupt generation." Those who believed were baptized, and on that day about three thousand disciples were added to their number.