1 Samuel 26:14-16

14David called to the people and to Abner the son of Ner, saying, “Will you not answer, Abner?” Then Abner replied, “Who are you who calls 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 to destroy the king your lord. 16This thing that you have done is not good. As the Lord lives, all of you 12must surely die, because you did not guard your lord, the Lord’s anointed. And now, see where the king’s spear is and the jug of water that was at his head.”