1 Samuel 18:10-11

18:10 The next day an evil spirit from God rushed upon Saul and he prophesied within his house. Now David was playing the lyre that day. There was a spear in Saul’s hand, 18:11 and Saul threw the spear, thinking, “I’ll nail David to the wall!” But David escaped from him on two different occasions.

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.)