Jehu

However Jehu did not turn away from the sins of Jeroboam the son of Nebat, who had made Israel sin, that is, from the golden calves that were at Bethel and Dan.  And the LORD said to Jehu, "Because you have done well in doing what is right in My sight, and have done to the house of Ahab all that was in My heart, your sons shall sit on the throne of Israel to the fourth generation."  But Jehu took no heed to walk in the law of the LORD God of Israel with all his heart; for he did not depart from the sins of Jeroboam, who had made Israel sin. (2 Kings 10:29-31; NKJV)

Jehu continued the downward spiral of disobedience in the northern kingdom of Israel.  He failed to follow Jehovah completely and as a result, he suffered and the nation suffered.  Let us learn from his mistakes and be a blessing to others by walking in the law of Christ with all of our hearts.