I Samuel 26:5-7

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. 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.” 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.