2 Kings 10:11-14

11So Jehu struck down all who remained of the house of Ahab in Jezreel, all his great men and his close friends and his priests, until he left him none remaining.

12Then he set out and went to Samaria. On the way, when he was at Beth-eked of the Shepherds,

13Jehu met the relatives of Ahaziah king of Judah, and he said, "Who are you?" And they answered, "We are the relatives of Ahaziah, and we came down to visit the royal princes and the sons of the queen mother."

14He said, "Take them alive." And they took them alive and slaughtered them at the pit of Beth-eked, forty-two persons, and he spared none of them.