I just finished a study of the book of Revelation. I’ve always been confused by the size of the New Jerusalem as described in Revelation 21. I get that it is huge. I can understand how wide and long it is, but when it says it is also says it is 1400 miles high (see verse 16), I think it is impossible! Maybe it is figurative, like most of the symbols in this book. But now I have a different thought. This is my own thinking, not someone else’s idea:
The New Jerusalem arrives on the scene AFTER Satan and all of God’s enemies are destroyed by a huge fire. In fact, heaven and earth are also destroyed in the fire. Then God creates a new heaven and a new earth.
I always imagined this taking place on this earth. A huge New Jerusalem could fit on a new earth that has different dimensions than this earth. We aren’t told the size of the new earth. We don’t know much about it at all. It has no sun or moon. It may not be constrained by the things that we have now. Gravity? Does it even spin? There is no day/night cycle. I’m seeing whole new possibilities that have never crossed my mind before.