NET
12 His assassination fulfilled the Lord’s message to Jehu, “Four generations of your descendants will rule on Israel’s throne.” And that is how it happened.
Darby
12 This was the word of Jehovah which he spoke to Jehu saying, Thy sons shall sit upon the throne of Israel unto the fourth [generation]. And so it came to pass.
KJV
12 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.