2 Kings 10:10

6Then he wrote a letter the second time to them, saying, “If you are on my side, and if you will listen to my voice, take the heads of the men who are your master’s sons, and come to me to Jezreel by tomorrow this time.” Now the king’s sons, being seventy persons, were with the great men of the city, who brought them up.

7When the letter came to them, they took the king’s sons and killed them, even seventy people, and put their heads in baskets, and sent them to him to Jezreel.

8A messenger came and told him, “They have brought the heads of the king’s sons.” He said, “Lay them in two heaps at the entrance of the gate until the morning.”

9In the morning, he went out and stood, and said to all the people, “You are righteous. Behold, I conspired against my master and killed him, but who killed all these?

10Know now that nothing will fall to the earth of the LORD’s word, which the LORD spoke concerning Ahab’s house. For the LORD has done that which he spoke by his servant Elijah.”

11So Jehu struck all that remained of Ahab’s house in Jezreel, with all his great men, his familiar friends, and his priests, until he left him no one remaining.

12He arose and departed, and went to Samaria. As he was at the shearing house of the shepherds on the way,

13Jehu met with the brothers of Ahaziah king of Judah, and said, “Who are you?” They answered, “We are the brothers of Ahaziah. We are going down to greet the children of the king and the children of the queen.”

14He said, “Take them alive!” They took them alive, and killed them at the pit of the shearing house, even forty-two men. He didn’t leave any of them.