Bereshis 17:9-11

Orthodox Jewish Bible

⁹ And Elohim said unto Avraham, Thou shalt be shomer over My Brit therefore, thou, and thy zera after thee in the dorot.

¹⁰ This is My Brit (covenant), which ye shall be shomer over, between Me and you and thy zera after thee; every zachar among you shall be circumcised.

¹¹ And ye shall circumcise the basar of your arelah; and it shall be an ot brit (sign of the covenant) between Me and you.