2 Samuel 4:5-7

5Then the sons of Rimmon the Beerothite, Rechab and Baanah, set out and came at about the heat of the day to the house of Ishbosheth, who was lying on his bed at noon.

6And they came there, all the way into the house, as though to get wheat, and they stabbed him in the stomach. Then Rechab and Baanah his brother escaped.

7For when they came into the house, he was lying on his bed in his bedroom; then they struck him and killed him, beheaded him and took his head, and were all night escaping through the plain.