Read 2 Kings 15:12 Using Other Translations
This was the word of the LORD which he spake unto Jehu, saying, Thy sons shall sit on the throne of Israel unto the fourth generation. And so it came to pass.
(This was the promise of the LORD that he gave to Jehu, "Your sons shall sit on the throne of Israel to the fourth generation." And so it came to pass.)
So the LORD ’s message to Jehu came true: “Your descendants will be kings of Israel down to the fourth generation.”