2 Samuel 4:5-7

One day Baanah and Recab, the two sons of Rimmon, headed out for the house of Ish-Bosheth. They arrived at the hottest time of the day, just as he was taking his afternoon nap. They entered the house on a ruse, pretending official business. The maid guarding the bedroom had fallen asleep, so Recab and Baanah slipped by her and entered the room where Ish-Bosheth was asleep on his bed. They killed him and then cut off his head, carrying it off as a trophy. They traveled all night long, taking the route through the Arabah Valley.