Genesis 17:9-11

New King James Version

⁹ And God said to Abraham: “As for you, ^(A)you shall keep My covenant, you and your descendants after you throughout their generations. ¹⁰ This is My covenant which you shall keep, between Me and you and your descendants after you: ^(B)Every male child among you shall be circumcised; ¹¹ and you shall be circumcised in the flesh of your foreskins, and it shall be ^(C)a sign of the covenant between Me and you.