2 Samuel 4:11 (KJV)

And David answered Rechab and Baanah his brother, the sons of Rimmon the Beerothite, and said unto them, As the Lord liveth, who hath redeemed my soul out of all adversity,

When one told me, saying, Behold, Saul is dead, thinking to have brought good tidings, I took hold of him, and slew him in Ziklag, who thought that I would have given him a reward for his tidings:

How much more, when wicked men have slain a righteous person in his own house upon his bed? shall I not therefore now require his blood of your hand, and take you away from the earth?

And David commanded his young men, and they slew them, and cut off their hands and their feet, and hanged them up over the pool in Hebron. But they took the head of Ish–bosheth, and buried it in the sepulchre of Abner in Hebron.