Commentators unanimously agree that this promise is not about an unending line of earthly kings, as the monarchy ended soon after Jeremiah's time. Instead, the prophecy finds its ultimate and true fulfillment in Jesus Christ. He is the Son of David whose spiritual kingdom is eternal. As multiple scholars note, the earthly Davidic kingdom was a 'type' or 'symbol' pointing forward to the perfect and everlasting reign of the Messiah.