2 Samuel 4:9-11

9But David said to Recab and Baanah, “The Lord, who saves me from all my enemies, is my witness.

10Someone once told me, ‘Saul is dead,’ thinking he was bringing me good news. But I seized him and killed him at Ziklag. That’s the reward I gave him for his news!

11How much more should I reward evil men who have killed an innocent man in his own house and on his own bed? Shouldn’t I hold you responsible for his blood and rid the earth of you?”