'Foreskins' in the Bible

and Joshua maketh for him knives of flint, and circumciseth the sons of Israel at the height of the foreskins.

And Saul saith, 'Thus do ye say to David, There is no delight to the king in dowry, but in a hundred foreskins of the Philistines -- to be avenged on the enemies of the king;' and Saul thought to cause David to fall by the hand of the Philistines.

and David riseth and goeth, he and his men, and smiteth among the Philistines two hundred men, and David bringeth in their foreskins, and they set them before the king, to be son-in-law to the king; and Saul giveth to him Michal his daughter for a wife.

And David sendeth messengers unto Ish-Bosheth son of Saul, saying, 'Give up my wife Michal, whom I betrothed to myself with a hundred foreskins of the Philistines.'

Be circumcised to Jehovah, And turn aside the foreskins of your heart, O man of Judah, and ye inhabitants of Jerusalem, Lest My fury go out as fire, and hath burned, And there is none quenching, Because of the evil of your doings.