1 Samuel 26:14-16

14And David called out to the people and to Abner the son of Ner, saying, “Do you not answer, Abner?” Then Abner answered and said, “Who are you, calling out to the king?”

15So David said to Abner, “Are you not a man? And who is like you in Israel? Why then have you not guarded your lord the king? For one of the people came in to destroy your lord the king.

16This thing that you have done is not good. As the Lord lives, you deserve to die, because you have not guarded your master, the Lord’s anointed. And now see where the king’s spear is, and the jug of water that was by his head.”