Patristic Wisdom: Looking to the Seventh Sunday after Pentecost

As you therefore have received Christ Jesus the Lord, so walk in Him, rooted and built up in Him and established in the faith, as you have been taught, abounding in it with thanksgiving. Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men, according to the basic principles of the world, and not according to Christ. For in Him dwells all the fullness of the Godhead bodily; and you are complete in Him, who is the head of all principality and power. In Him you were also circumcised with the circumcision made without hands, by putting off the body of the sins of the flesh, by the circumcision of Christ, buried with Him in baptism, in which you also were raised with Him through faith in the working of God, who raised Him from the dead. And you, being dead in your trespasses and the uncircumcision of your flesh, He has made alive together with Him, having forgiven you all trespasses, having wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross. Having disarmed principalities and powers, He made a public spectacle of them, triumphing over them in it. (Colossians 2:6–15)

In other words, since under pressure they embraced the life of the Law, he brings out once again the difference in circumcision: it is not of the flesh (he is saying) but of the Spirit, not done by human hand but Divine, not a removal of a fragment of flesh but freedom from all corruption. It is not the Law that is responsible for this but Christ the Lord, the giver of the Law; he says, note, in Him also you were circumcised, and again, through the circumcision of Christ. By putting off the body of the sins of the flesh he referred to saving baptism: in it we put off the soiled garment of sin. In the life to come, on the other hand, the body, rendered incorruptible and immortal, can no longer be affected by the stain of sin. Now, to the fact that this refers to baptism the sequel also testifies. Since he called saving baptism a type of death (implying this in buried), he gives the good news of resurrection. And since we still have a mortal nature, he went on: believing in the power of God we await the resurrection, having having the resurrection of Christ the Lord as a pledge.

Sin destroyed us all, imposing on us the sentence of death. But the God of all made us sharers in the life of Christ the Lord, and bestowed on us forgiveness of sins.

Theodoret of Cyrus, Interpretation of the Letter to the Colossians 2