2 Samuel 4:5-7

5One day Recab and Baanah, the sons of Rimmon from Beeroth, went to Ishbosheth’s house around noon as he was taking his midday rest.

6The doorkeeper, who had been sifting wheat, became drowsy and fell asleep. So Recab and Baanah slipped past her.

7They went into the house and found Ishbosheth sleeping on his bed. They struck and killed him and cut off his head. Then, taking his head with them, they fled across the Jordan Valley through the night.