Col 2:12-13
12 If it's an initiation ritual you're after, you've already been through it by submitting to baptism. Going under the water was a burial of your old life; coming up out of it was a resurrection, God raising you from the dead as he did Christ. 13 When you were stuck in your old sin-dead life, you were incapable of responding to God. God brought you alive — right along with Christ!