1 Samuel 26:7-9

Revised Standard Version

⁷ So David and Abi′shai went to the army by night; and there lay Saul sleeping within the encampment, with his spear stuck in the ground at his head; and Abner and the army lay around him. ⁸ Then said Abi′shai to David, “God has given your enemy into your hand this day; now therefore let me pin him to the earth with one stroke of the spear, and I will not strike him twice.” ⁹ But David said to Abi′shai, “Do not destroy him; for who can put forth his hand against the Lord’s anointed, and be guiltless?”