“But Jehu took no heed to walk in the law of the Lord God of Israel with all his heart; for he departed not from the sins of Jeroboam, which made Israel to sin.”
Jehu had done homage to Jehovah by extirpating the foreign Baal worship, but he patronized and actively supported the irregular mode of worshiping Jehovah established by Jeroboam as the state religion of the northern kingdom. He attempted to serve God and Mammon. Religion was to him but a political instrument.
Jehu did the particular kind of work which had been assigned to him--a work of destruction and blood. Perhaps he alone of all the people of his time could have accomplished this task. But Jehu must stand in history as a warning rather than as an example.