For an explanation of Jehovah/YHWH see also: God? What’s in a Name.
The circumference of the city shall be eighteen thousand cubits. And the name of the city henceforth shall be, The LORD is there.” Ezek. 48:35
FYI: The Hebrew does not actually state “cubits.” No length of measure is given, only the amount.
When John describes the New Jerusalem, He uses the same idea.
1 Then I saw a new heaven and a new earth; for the first heaven and the first earth had passed away, and the sea was no more. 2 And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband; 3 and I heard a loud voice from the throne saying, “Behold, the dwelling of God is with men. He will dwell with them, and they shall be his people, and God himself will be with them; 4 he will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning nor crying nor pain any more, for the former things have passed away.” Rev. 21:1-4
In these idealized states, God dwells with His people. There is much discussion among the theologians as to whether or not these two cities are the same city from different perspectives, one being Jewish and the other Christian, or are they different places altogether in time or space.
In both cases, it is a place where it will no longer be questioned if the Lord is truly there. There will be no occasion for any to ask “is the Lord among us?”
And he called the name of the place Massah and Meribah, because of the faultfinding of the children of Israel, and because they put the LORD to the proof by saying, “Is the LORD among us or not?” Ex. 17:7
And the Word became flesh and dwelt among us, full of grace and truth; we have beheld his glory, glory as of the only Son from the Father. John 1:14
First He came and dwelt among us, next we will dwell with Him.