1 Samuel 18:26-27
Context18:26 So his servants told David these things and David agreed 1 to become the king’s son-in-law. Now the specified time had not yet expired 2 18:27 when David, along with his men, went out 3 and struck down two hundred Philistine men. David brought their foreskins and presented all of them to the king so he could become the king’s son-in-law. Saul then gave him his daughter Michal in marriage.