A very good job is done in explaining that the New Jerusalem, rather than a physical cube hovering over the earth, is a living collective PERSON.
The destiny of the saved in a corporate Person of the Son of God dispensed into millions and millions of people, a collective habitation of God in living glorified, transformed redeemed people.
What a destiny of the God created humanity.
Things are shaking all around. But we who believe into Jesus Christ have received "an unshakable kingdom" - the New Jerusalem.
Nathan Betts did a good job to help the college students inquiring to understand Revelation 21 and 22.