And so he gave Abraham the covenant of circumcision. After this, he fathered Isaac and circumcised him on the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve patriarchs.
If a foreigner resides among you and wants to observe the Lord’s Passover, every male in his household must be circumcised, and then he may participate; he will become like a native of the land. But no uncircumcised person may eat it.