Pelagius — on Rom 2:26 (PELAGIUS'S COMMENTARY ON ROMANS)

“The visible needs the invisible but not the other way round, because the visible is an image of the invisible, while the invisible is the reality itself. Thus, the circumcision of the flesh needs the circumcision of the heart but not vice versa, because the reality does not need the image.… If circumcision has no value by itself, why was it instituted? First, in order to distinguish the people of God from among the Gentiles. This is why when they were by themselves in the desert they were not circumcised. Or perhaps so that their bodies might be identified in battle. The reason why they were marked in that part of the body was first so that they would not be disfigured in a part of the body which was open to public view, and second, because the promise of grace would make this part of the body honorable through chastity. Or perhaps it was because it signified that Christ would be born from its seed. He was destined to introduce spiritual circumcision, but until he was born, physical circumcision would continue.”