John 7:20-22

²⁰And the people answered, and said, Thou hast a devil; who seeketh to slay thee?

²¹Jesus answered, and said to them, I have done one work, and all ye wonder.

²²Therefore Moses gave to you circumcision; not for it is of Moses, but of the fathers, (or not that it was from Moses, but from the fathers); and in (or on) the sabbath ye circumcise a man.