You shall be circumcised in the flesh of your foreskin. It will be a token of the covenant between me and you.
and said to them, "We can't do this thing, to give our sister to one who is uncircumcised; for that is a reproach to us.
Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said, "Surely you are a bridegroom of blood to me."
In the eighth day the flesh of his foreskin shall be circumcised.
"'When you come into the land, and have planted all kinds of trees for food, then you shall count their fruit as forbidden. Three years shall they be forbidden to you. It shall not be eaten.
Circumcise therefore the foreskin of your heart, and be no more stiff-necked.
1 Samuel 18:25
Saul said, "You shall tell David, 'The king desires no dowry except one hundred foreskins of the Philistines, to be avenged of the king's enemies.'" Now Saul thought to make David fall by the hand of the Philistines.
2 Samuel 3:14
David sent messengers to Ishbosheth, Saul's son, saying, "Deliver me my wife Michal, whom I pledged to be married to me for one hundred foreskins of the Philistines."
Circumcise yourselves to Yahweh, and take away the foreskins of your heart, you men of Judah and inhabitants of Jerusalem; lest my wrath go forth like fire, and burn so that none can quench it, because of the evil of your doings.
Behold, the days come, says Yahweh, that I will punish all those who are circumcised in [their] uncircumcision:
The uncircumcised male who is not circumcised in the flesh of his foreskin, that soul shall be cut off from his people. He has broken my covenant."
Abraham took Ishmael his son, all who were born in his house, and all who were bought with his money; every male among the men of Abraham's house, and circumcised the flesh of their foreskin in the same day, as God had said to him.
1 Samuel 18:27
and David arose and went, he and his men, and killed of the Philistines two hundred men; and David brought their foreskins, and they gave them in full number to the king, that he might be the king's son-in-law. Saul gave him Michal his daughter as wife.