John saw a new heaven and a new earth, then he saw the new Jerusalem. It sounds like your new something which seems to be the topic. New York hand an old York in the old world. While New York grew up in the new world. I think its original name was New Ansterdam, but it was changed to New York.
And I saw a new heaven and a new earth: for the first heaven and the first earth are passed away; and the sea is no more Rev 21:1
The old earth passes away with the old heaven, so we see a new heaven and a new earth come into existence. How simple is that? I guess we like to complicate things and bring our own wild interpretations into the picture.
And I saw the holy city, new Jerusalem, coming down out of heaven from God, made ready as a bride adorned for her husband. 3And I heard a great voice out of the throne saying, Behold, the tabernacle of God is with men, and he shall dwell with them, and they shall be his peoples, and God himself shall be with them, and be their God: 4and he shall wipe away every tear from their eyes; and death shall be no more; neither shall there be mourning, nor crying, nor pain, any more: the first things are passed away. 5And he that sitteth on the throne said, Behold, I make all things new Rev 21
The new Jerusalem comes down out of heaven, so the old Jerusalem is no more. Just like the old heaven and the old earth passes away, the old Jerusalem passes away; so the new Jerusalem takes its place. The new Jerusalem is made ready like a bride for her husband. I don't see the bride of Christ here. I see a real Jerusalem coming down out of heaven.