Acts 2:36-40 New International Version (NIV)
36 “Therefore let all Israel be assured of this: God has made this Jesus, whom you crucified, both Lord and Messiah.”
37 When the people heard this, they were cut to the heart and said to Peter and the other apostles, “Brothers, what shall we do?”
38 Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit. 39 The promise is for you and your children and for all who are far off—for all whom the Lord our God will call.”
40 With many other words he warned them; and he pleaded with them, “Save yourselves from this corrupt generation.”
Isaiah 59:20 "The Redeemer will come to Zion, to those in Jacob who turn from transgression," declares the LORD. Matthew 3:6 Confessing their sins, they were baptized by him in the Jordan River. Mark 1:15 "The time is fulfilled," He said, "and the kingdom of God is near. Repent and believe in the gospel!"
We have in this short verse the summary of Christian doctrine as regards man and God. Repentance and faith on the part of man; forgiveness of sins, or justification, and the gift of the Holy Ghost, or sanctification, on the part of God. And both these are expressed in the sacrament of baptism, which as it were ties the act of man to the promise of God. For the sacrament expresses man's faith and repentance on one side, and God's forgiveness and gift on the other. Verse 38-Pulpit Commentary
