But I saw no temple in it, for the Lord God Almighty and the Lamb are its temple. The city had no need of the sun or of the moon to shine in it, for the glory of God illuminated it. The Lamb is its light. And the nations of those who are saved shall walk in its light, and the kings of the earth bring their glory and honor into it. (Rev 21:22-24 NKJ)
And he showed me a pure river of water of life, clear as crystal, proceeding from the throne of God and of the Lamb. In the middle of its street, and on either side of the river, was the tree of life, which bore twelve fruits, each tree yielding its fruit every month. The leaves of the tree were for the healing of the nations. And there shall be no more curse, but the throne of God and of the Lamb shall be in it, and His servants shall serve Him. They shall see His face, and His name shall be on their foreheads. There shall be no night there: They need no lamp nor light of the sun, for the Lord God gives them light. And they shall reign forever and ever. (Rev 22:1-5 NKJ)
Have you ever wondered what it was like in the Garden of Eden? I believe the book of Revelation gives us a glimpse. Man was made in the image and likeness of God. Adam and his wife were image bearers, reflecting the light of the glory of God to all creation as they functioned as priests before God, in a temple not made with human hands. (Rev 21:22) The river brought life wherever it flowed, and the trees bore their fruit, and the leaves were for the healing of the nations. The end of the Book of Revelation is the restoration of the garden, and the restoration of man’s vocation before God.
How, you might ask, could they walk out of the light and into darkness. Though Adam had everything, human nature will always desire more. Instead of gaining more, Adam lost what he had.