Chapter 16 — Part II: The Sacraments — Baptism
Section 66. Circumcision, too, which was a figure of Baptism, affords strong argument in proof of this practice. That children were circumcised on the eighth day is universally known. If then circumcision, made by hand, in despoiling of the body of the flesh, was profitable to children, it is clear that Baptism, which is the circumcision of Christ, not made by hand, is also profitable to them.