'Foreskins' in the Bible

And Joshua made him knives of lint, and circumcised the children of Israel at the hill of the foreskins.

And Saul said, Thus shall ye say to David, The king desireth not any dowry, but a 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.

and David arose and went, he and his men, and slew 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. And Saul gave him Michal his daughter to wife.

And David sent messengers to Ish-bosheth, Saul's son, saying, Deliver me my wife Michal, whom I betrothed to me for a hundred foreskins of the Philistines.

Circumcise yourselves to Jehovah, and take away the foreskins of your heart, ye 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.