Genesis 17:9-14

New Revised Standard Version, Anglicised

⁹ God said to Abraham, ‘As for you, you shall keep my covenant, you and your offspring after you throughout their generations. ¹⁰ This is my covenant, which you shall keep, between me and you and your offspring after you: Every male among you shall be circumcised. ¹¹ You shall circumcise the flesh of your foreskins, and it shall be a sign of the covenant between me and you. ¹² Throughout your generations every male among you shall be circumcised when he is eight days old, including the slave born in your house and the one bought with your money from any foreigner who is not of your offspring. ¹³ Both the slave born in your house and the one bought with your money must be circumcised. So shall my covenant be in your flesh an everlasting covenant. ¹⁴ Any uncircumcised male who is not circumcised in the flesh of his foreskin shall be cut off from his people; he has broken my covenant.’