2 Samuel 4:5-9

5Now Rekab and Baanah, the sons of Rimmon the Beerothite, set out for the house of Ish-Bosheth, and they arrived there in the heat of the day while he was taking his noonday rest.

6They went into the inner part of the house as if to get some wheat, and they stabbed him in the stomach. Then Rekab and his brother Baanah slipped away.

7They had gone into the house while he was lying on the bed in his bedroom. After they stabbed and killed him, they cut off his head. Taking it with them, they traveled all night by way of the Arabah.

8They brought the head of Ish-Bosheth to David at Hebron and said to the king, “Here is the head of Ish-Bosheth son of Saul, your enemy, who tried to kill you. This day the Lord has avenged my lord the king against Saul and his offspring.”

9David answered Rekab and his brother Baanah, the sons of Rimmon the Beerothite, “As surely as the Lord lives, who has delivered me out of every trouble,