Peter preaches baptism alongside repentance as part of the necessary death and rebirth of all disciples of Jesus in Acts 2:36-38. Baptism not merely a "work" or an "outward sign of an inward grace" as some teach it, while at the same time, the scriptures teach that baptism without faith and repentance is meaningless. There is something mysterious and profound about baptism--it's where the spiritual and physical intersect. The Bible says that it is by repentance and baptism that we receive the Holy Spirit, the forgiveness of sins, and citizenship in God's kingdom. Over and over in the New Testament (especially in the books of Acts): when someone is saved, they repent and are baptized. We do our best to follow in the footsteps of the early disciples and baptize repentant believers into a new life in Christ.
Acts 2:38 38 And Peter said to them, “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.
1 Peter 3:21 21 Baptism, which corresponds to this, now saves you, not as a removal of dirt from the body but as an appeal to God for a good conscience, through the resurrection of Jesus Christ,
Mark 16:16 16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.
Acts 22:16 16 And now why do you wait? Rise and be baptized and wash away your sins, calling on his name.
John 3:5 5 Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
Matthew 3:11 11 “I [John the Baptist] baptize you with water for repentance, but he who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire."
Romans 6:4 4 We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life.
Scripture quotations are from The Holy Bible, English Standard Version® (ESV®), copyright © 2001 by Crossway, a publishing ministry of Good News Publishers. Used by permission. All rights reserved.