2 Kings 10:30

And the Lord said unto Jehu,.... By a prophet, he not being one himself; and this is generally supposed, by the Jews w, to be Jonah the son of Amittai:

because thou hast done well in executing that which is right in mine eyes: in rooting out the idolatry of Baal, which was right in the sight of God, and was materially a good work, though it might not be done from a good principle, nor every step taken in doing it justifiable:

and hast done unto the house of Ahab according to all that was in mine heart: that he had decreed within himself should be done, and had foretold by his prophets would be done, the doing of which was acceptable and well pleasing to him:

thy children of the fourth generation shall sit on the throne of Israel; as they did, namely, Jehoahaz, Joash, Jeroboam, and Zachariah, though the last reigned but six months, just enough to fulfil this promise.

w Seder Olam Rabba, c. 19.