See post #7. It called confession and absolution.
10and in Him you have been made complete, and He is the head over all rule and authority;
11and in Him you were also circumcised with a circumcision made without hands, in the removal of the body of the flesh by the circumcision of Christ;
12having been buried with Him in baptism, in which you were also raised up with Him through faith in the working of God, who raised Him from the dead.
13When you were dead in your transgressions and the uncircumcision of your flesh, He made you alive together with Him, having forgiven us all our transgressions,
14having canceled out the certificate of debt consisting of decrees against us, which was hostile to us; and He has taken it out of the way, having nailed it to the cross.
Colossians 2:10-14 NASB