1 Samuel 26:7-14, 21-25

So David and Abishai 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. Then Abishai said to David, “God has given your enemy into your hand this day. Now please let me pin him to the earth with one stroke of the spear, and I will not strike him twice.” But David said to Abishai, “Do not destroy him, for who can put out his hand against the LORD’s anointed and be guiltless?” And David said, “As the LORD lives, the LORD will strike him, or his day will come to die, or he will go down into battle and perish. The LORD forbid that I should put out my hand against the LORD’s anointed. But take now the spear that is at his head and the jar of water, and let us go.” So David took the spear and the jar of water from Saul’s head, and they went away. No man saw it or knew it, nor did any awake, for they were all asleep, because a deep sleep from the LORD had fallen upon them. Then David went over to the other side and stood far off on the top of the hill, with a great space between them. And David called to the army, and to Abner the son of Ner, saying, “Will you not answer, Abner?” Then Abner answered, “Who are you who calls to the king?”

Then Saul said, “I have sinned. Return, my son David, for I will no more do you harm, because my life was precious in your eyes this day. Behold, I have acted foolishly, and have made a great mistake.” And David answered and said, “Here is the spear, O king! Let one of the young men come over and take it. The LORD rewards every man for his righteousness and his faithfulness, for the LORD gave you into my hand today, and I would not put out my hand against the LORD’s anointed. Behold, as your life was precious this day in my sight, so may my life be precious in the sight of the LORD, and may he deliver me out of all tribulation.” Then Saul said to David, “Blessed be you, my son David! You will do many things and will succeed in them.” So David went his way, and Saul returned to his place.