The reading is from St. Paul's Letter to the Colossians 2:8-12

BRETHREN, see to it that no one makes a prey of you by philosophy and empty deceit, according to human tradition, according to the elemental spirits of the universe, and not according to Christ. For in him the whole fulness of deity dwells bodily, and you have come to fulness of life in him, who is the head of all rule and authority. In him also you were circumcised with a circumcision made without hands, by putting off the body of flesh in the circumcision of Christ; and you were buried with him in baptism, in which you were also raised with him through faith in the working of God, who raised him from the dead.