'Foreskins' in the Bible

Then Saul said, “This is what you shall say to David: ‘The king wants no dowry except a hundred foreskins of the Philistines, to take vengeance on the king’s enemies.’” Now Saul’s intention was to cause David’s death at the hand of the Philistines.

David arose and went, he and his men, and killed two hundred Philistine men, and David brought their foreskins [as proof of death] and presented every one of them to the king, so that he might become the king’s son-in-law. So Saul gave him Michal, his [younger] daughter, as a wife.

So David sent messengers to Ish-bosheth, Saul’s son, saying, “Give me my wife Michal, to whom I was betrothed for [the price of] a hundred foreskins of the Philistines.”

“Circumcise (dedicate, sanctify) yourselves to the LordAnd remove the foreskin [sins] of your heart,Men of Judah and inhabitants of Jerusalem,Or else My wrath will go forth like fire [consuming all that gets in its way]And burn and there will be no one to quench it,Because of the evil of your acts.”