Colossians 2:11-12

In Him you were also circumcised with a circumcision not made with hands, but by the [spiritual] circumcision of Christ in the stripping off of the body of the flesh [the sinful carnal nature], having been buried with Him in baptism and raised with Him [to a new life] through [your] faith in the working of God, [as displayed] when He raised Christ from the dead.