Acts 2:36-39

36 "Let all the house of Israel therefore know assuredly that God has made him both Lord and Christ, this Jesus whom you crucified."

37 Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, "Brothers, what shall we do?"

38 Peter said to them, "Repent, and be baptized, everyone of you, in the name of Jesus Christ for the forgiveness of sins, and you will receive the gift of the Holy Spirit.  39 For to you is the promise, and to your children, and to all who are far off, even as many as the Lord our God will call to himself."