'Foreskins' in the Bible

Then Saul replied, “Say this to David: ‘The king desires no other bride-price except 100 Philistine foreskins, to take revenge on his enemies.’” Actually, Saul intended to cause David’s death at the hands of the Philistines.

David and his men went out and killed 200 Philistines. He brought their foreskins and presented them as full payment to the king to become his son-in-law. Then Saul gave his daughter Michal to David as his wife.

Then David sent messengers to say to Ish-bosheth son of Saul, “Give me back my wife, Michal. I was engaged to her for the price of 100 Philistine foreskins.”