2 Samuel 4:9-11

9And David answered Rechab and Baanah his brother, the sons of Rimmon the Beerothite, and said unto them, As Jehovah liveth, who hath redeemed my soul out of all adversity, 10when one told me, saying, Behold, Saul is dead, thinking to have brought good tidings, I took hold of him, and slew him in Ziklag, which was the reward I gave him for his tidings. 11How much more, when wicked men have slain a righteous person in his own house upon his bed, shall I not now require his blood of your hand, and take you away from the earth?