30 And Jehovah said unto Jehu, Because thou hast done well in executing that which is right in mine eyes, [and] hast done unto the house of Ahab according to all that was in my heart, thy sons of the fourth generation shall sit on the throne of Israel.
Matthew Henry's Commentary on 2 Kings 10:30
Commentary on 2 Kings 10:29-36
(Read 2 Kings 10:29-36)
It is justly questionable whether Jehu acted from a good principle, and whether he did not take some false steps in doing it; yet no services done for God shall go unrewarded. But true conversion is not only from gross sin, but from all sin; not only from false gods, but from false worships. True conversion is not only from wasteful sins, but from gainful sins; not only from sins which hurt our worldly interests, but from those that support and befriend them; in forsaking which is the great trial whether we can deny ourselves and trust God. Jehu showed great care and zeal for rooting out a false religion, but in the true religion he cared not, took no heed to please God and do his duty. Those that are heedless, it is to be feared, are graceless. The people were also careless, therefore it is not strange that in those days the Lord began to cut Israel short. They were short in their duty to God, therefore God cut them short in their extent, wealth, and power.