1 Samuel 21:13; 1 Samuel 26:8

1 Samuel 21:13

13 So he pretended to be insane in their presence; and while he was in their hands he acted like a madman, making marks on the doors of the gate and letting saliva run down his beard.

1 Samuel 26:8

8 Abishai said to David, “Today God has delivered your enemy into your hands. Now let me pin him to the ground with one thrust of the spear; I won’t strike him twice.”