2 Kings 10:10-11, 31

You can be sure that the message of the LORD that was spoken concerning Ahab’s family will not fail. The LORD declared through his servant Elijah that this would happen.” Then Jehu killed all who were left of Ahab’s relatives living in Jezreel and all his important officials, his personal friends, and his priests. So Ahab was left without a single survivor.

But Jehu did not obey the Law of the LORD, the God of Israel, with all his heart. He refused to turn from the sins that Jeroboam had led Israel to commit.