When your days are over and you rest with your ancestors, I will raise up your offspring to succeed you, your own flesh and blood, and I will establish his kingdom. He is the one who will build a house for my Name, and I will establish the throne of his kingdom forever (2 Samuel 7:12–13).
This prophecy was given to King David of Israel. The promise to David is that he would have a descendant who have a kingdom that will never end, that is, David would have a descendant who would be king forever. This was accomplished at the birth of Jesus: This is the genealogy of Jesus the Messiah the son of David, the son of Abraham (Matthew 1:1). Revelation 19:16 NRSV On his robe and on his thigh he has a name inscribed, "King of kings and Lord of lords. Be thankful for a great and loving King.