Genesis 17:10
10 This is My covenant, which you shall keep, between Me and you and your seed after you: every male among you shall be circumcised.
Genesis 17:11
11 And you shall be circumcised in the flesh of your foreskin, and it shall be the sign of the covenant between Me and you.
Genesis 17:13
13 A servant who is born in your house or who is bought with your money shall surely be circumcised; thus shall My covenant be in your flesh for an everlasting covenant.
Genesis 17:14
14 But an uncircumcised male who is not circumcised in the flesh of his foreskin, that person shall be cut off from his people; he has broken My covenant.”