2 Kings 10:10-11, 31

Know then that there shall fall to the earth nothing of the word of the LORD, which the LORD spoke concerning the house of Ahab, for the LORD has done what he said by his servant Elijah.” So 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.

But Jehu was not careful to walk in the law of the LORD, the God of Israel, with all his heart. He did not turn from the sins of Jeroboam, which he made Israel to sin.