1 Samuel 26:14-16

14David called to the army and to Abner the son of Ner, “Will you not answer, Abner?” Abner replied, “Who are you who calls [and disturbs] the king?”

15David said to Abner, “Are you not a [brave] man? Who is like you in Israel? Why then have you not guarded your lord the king? For one of the people came [into your camp] to kill the king your lord.

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