Genesis 17:9-11
Read Genesis 17 in full →9God said further to Abraham, “Now as for you, ayou shall keep My covenant, you and your seed after you throughout their generations. 10“aThis is My covenant, which you shall keep, between Me and you and your seed after you: every male among you shall be circumcised. 11“And ayou shall be circumcised in the flesh of your foreskin, and it shall be the sign of the covenant between Me and you.