1 Samuel 26:7-9

7 When night came, David and Abishai went into Saul’s camp. Saul was asleep in the middle of the circle of men. His spear was stuck in the ground near his head. Abner and the other soldiers were asleep around Saul.

8 Abishai said to David, “Today God has given your enemy to you. Let me pin Saul to the ground with his spear. I’ll only do it once!”

9 But David said to Abishai, “Don’t kill Saul! Anyone who hurts the LORD’S chosen king[115] must be punished.