For in Christ all the fullness of the Deity lives in bodily form, and in Christ you have been brought to fullness. He is the head over every power and authority. In him you were also circumcised with a circumcision not performed by human hands. Your whole self ruled by the flesh was put off when you were circumcised by Christ, having been buried with him in baptism, in which you were also raised with him through your faith in the working of God, who raised him from the dead.Colossians 2:9-12
The first statement, in verse 9, is pretty amazing, if you really consider what it is saying. As Paul writes to the Colossians, he says that God himself is present in Jesus. That means that we have had God himself walking around on the earth. God comes and speaks with people. The disciples and the people of that time walked with God. They spoke with God, face to face. We even have the words of Jesus written in the Gospels of Matthew, Mark, Luke, and John, meaning that we have the words of God himself as he spoke to the people.
From there, Paul says that we have been circumcised by Christ. This isn’t a circumcision performed by human hands, but a circumcision that is done by Christ, throwing off the old flesh, which is buried as we are baptized and instead giving us a new life as we are resurrected, just as Jesus was raised from the dead.