1 Samuel 26:4-10 New King James Version (NKJV)

4. David therefore sent out spies, and understood that Saul had indeed come.

5. So David arose and came to the place where Saul had encamped. And David saw the place where Saul lay, and Abner the son of Ner, the commander of his army. Now Saul lay within the camp, with the people encamped all around him.

6. Then David answered, and said to Ahimelech the Hittite and to Abishai the son of Zeruiah, brother of Joab, saying, “Who will go down with me to Saul in the camp?”And Abishai said, “I will go down with you.”

7. So David and Abishai came to the people by night; and there Saul lay sleeping within the camp, with his spear stuck in the ground by his head. And Abner and the people lay all around him.

8. Then Abishai said to David, “God has delivered your enemy into your hand this day. Now therefore, please, let me strike him at once with the spear, right to the earth; and I will not have to strike him a second time!”

9. But David said to Abishai, “Do not destroy him; for who can stretch out his hand against the Lord’s anointed, and be guiltless?”

10. David said furthermore, “As the Lord lives, the Lord shall strike him, or his day shall come to die, or he shall go out to battle and perish.

1 Samuel 26