We can rest assured that this and every other promise of God will be fulfilled. Isaiah saw the day when all nations would go up to Jerusalem to the house of the Lord to learn of His law. He saw Jesus sitting as a Judge among peaceful nations and the Word of the Lord flowing from Jerusalem. Isaiah saw the incarnation of the Mighty God as a child. Phillipians tells us that we will all bow and confess at the Name of Jesus.
Exciting prophecies are yet to be fulfilled.
No kingdom will stand before Him. No Ceasar, Alexander, Stalin or Hitler will survive. Stalin will bow, Hitler will bow and you and I will bow. It is easy to talk of the evil bloody kings and kingdoms who have oppossed God s rule. There is another kingdom that is harder to identify.