Genesis 17:9-11

International Standard Version

The Sign of the Covenant

⁹ God continued to speak to Abraham, “You and your descendants who are born in the future are to keep my covenant—that is, you and your descendants, generation after generation. ¹⁰ Here is my covenant that you are to observe, between me and you and your descendants: Every male among you is to be circumcised. ¹¹ You are all to be circumcised in the flesh of your foreskin, and this is to be the sign of the covenant between me and you.