1 Samuel 26:14-16

14Then David called to the troops and to Ner’s son Abner. “Won’t you answer, Abner?” he asked. “Who is calling the king?” Abner asked.

15David asked Abner, “Aren’t you a man? Is there anyone like you in Israel? Then why didn’t you guard your master, the king? Someone came to kill His Royal Majesty.

16What you’ve done isn’t good. I solemnly swear, as the Lord lives, you are dead men. You didn’t guard your master, the Lord’s anointed king. Look at the king’s spear and the jar of water that were near his head.”