1 Samuel 18:20-27

Now Saul’s other daughter, Michal, loved David. When they told Saul, he was pleased. He thought, “I will let her marry David. Then she will be a trap for him, and the Philistines will defeat him.” So Saul said to David a second time, “You may become my son-in-law.” And Saul ordered his servants to talk with David in private and say, “Look, the king likes you. His servants love you. You should be his son-in-law.” Saul’s servants said these words to David, but David answered, “Do you think it is easy to become the king’s son-in-law? I am poor and unimportant.” When Saul’s servants told him what David had said, Saul said, “Tell David, ‘The king doesn’t want money for the bride. All he wants is a hundred Philistine foreskins to get even with his enemies.’ ” Saul planned to let the Philistines kill David. When Saul’s servants told this to David, he was pleased to become the king’s son-in-law. So he and his men went out and killed two hundred Philistines. David brought all their foreskins to Saul so he could be the king’s son-in-law. Then Saul gave him his daughter Michal for his wife.