Jehu had done right in God's eyes in destroying the idols, and his reward was suited to it in temporal mercies to him and his children to the fourth generation. Here is nothing said in all this of any gracious act in the mind of Jehu, or of any gracious blessing from the Lord in consequence. Very evident, it is, from Jehu's following the sins of Jeroboam, that no act of grace had passed upon his heart. Many are blessed in the gifts of common providences, which are not made partakers of a saving change of heart. The Lord may, and the Lord doth bestow the nether springs of his bounty on the men of the earth. His upper springs of grace springs belong to his children.
Related Commentaries of 2 Kings 10:30
2 Kings 10:30-31
30 And the LORD 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 mine heart, thy children of the fourth generation shall sit on the throne of Israel.
31 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.