And God said, “This is the sign of the covenant I am making between me and you and every living creature with you, a covenant for all generations to come:
Then David sent messengers to Ish-Bosheth son of Saul, demanding, “Give me my wife Michal, whom I betrothed to myself for the price of a hundred Philistine foreskins.”
“A foreigner residing among you who wants to celebrate the Lord’s Passover must have all the males in his household circumcised; then he may take part like one born in the land. No uncircumcised male may eat it.
Then he gave Abraham the covenant of circumcision. And Abraham became the father of Isaac and circumcised him eight days after his birth. Later Isaac became the father of Jacob, and Jacob became the father of the twelve patriarchs.
And he received circumcision as a sign, a seal of the righteousness that he had by faith while he was still uncircumcised. So then, he is the father of all who believe but have not been circumcised, in order that righteousness might be credited to them.