2 Samuel 4:10 in the King James Version
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:
Context
9 David answered Rechab and Baanah his brother, the sons of Rimmon the Beerothite, and said to them, “As the LORD lives, who has redeemed my soul out of all adversity,
10 when someone told me, ‘Behold, Saul is dead,’ thinking that he brought good news, I seized him and killed him in Ziklag, which was the reward I gave him for his news.
11 How much more, when wicked men have slain a righteous person in his own house on his bed, should I not now require his blood from your hand, and rid the earth of you?”