2 Samuel 4:9-11

9Then David answered Rechab and Baanah his brother, the sons of Rimmon the Beerothite, and said to them, [As] Jehovah liveth, who has redeemed my soul out of all distress,

10when one told me, saying, Behold, Saul is dead! and he was in his own sight a messenger of good, I took hold of him, and slew him in Ziklag — to whom forsooth I should give a reward for his good tidings:

11how much more, when wicked men have slain a righteous person in his own house upon his bed? and should I not now demand his blood of your hand, and take you away from the earth?