And David sent men to Saul's son Ish-bosheth, saying, Give me back Michal, my wife, whom I made mine for the price of the private parts of a hundred Philistines.
And if a man from another country is living with you, and has a desire to keep the Passover to the Lord, let all the males of his family undergo circumcision, and then let him come near and keep it; for he will then be as one of your people; but no one without circumcision may keep it.
Then Zipporah took a sharp stone, and cutting off the skin of her son's private parts, and touching his feet with it, she said, Truly you are a husband of blood to me.
And he made with him the agreement of which circumcision was the sign. And so Abraham had a son, Isaac, and gave him circumcision on the eighth day; and Isaac had a son, Jacob, and Jacob was the father of the twelve heads of the families of Israel.
And he was given the sign of circumcision as a witness of the faith which he had before he underwent circumcision: so that he might be the father of all those who have faith, though they have not circumcision, and so that righteousness might be put to their account;