And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband. And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God.
What's the best thing about our eternal life? The book of revelation is clear, the best thing about the new heavens and new earth is that we will be with God.
There's no temple, because the Lord is the temple and we'll be with him. (21:22)
We have no need of the sun because the glory of God is our light and we'll be with him. (21:23)
The gates of the city are never shut (21:24), because God is our security and we'll be with him.
We'll eat from the tree of life, worship Him, see His face, have his name on our foreheads (22:1-4)
He will be our God and we will be His people, that's what the future has in store for us!