1 Samuel 18:21

18:21 Saul said, “I will give her to him so that she may become a snare to him and the hand of the Philistines may be against him.” So Saul said to David, “Today is the second time for you to become my son-in-law.”

1 Samuel 18:25

18:25 Saul replied, “Here is what you should say to David: ‘There is nothing that the king wants as a price for the bride except a hundred Philistine foreskins, so that he can be avenged of his enemies.’” (Now Saul was thinking that he could kill David by the hand of the Philistines.)