2 Kings 10:11-14

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

12And he arose and departed and went to Samaria. On the way, at Beth Eked of the Shepherds,

13Jehu met with the brothers of Ahaziah king of Judah, and said, “Who are you?” So they answered, “We are the brothers of Ahaziah; we have come down to greet the sons of the king and the sons of the queen mother.”

14And he said, “Take them alive!” So they took them alive, and killed them at the well of Beth Eked, forty-two men; and he left none of them.