Genesis 17:9-11

Complete Jewish Bible

⁹ God said to Avraham, “As for you, you are to keep my covenant, you and your descendants after you, generation after generation. ¹⁰ Here is my covenant, which you are to keep, between me and you, along with your descendants after you: every male among you is to be circumcised. ¹¹ You are to be circumcised in the flesh of your foreskin; this will be the sign of the covenant between me and you.