Acts 3:19–21
Acts 3:21's apokatastasis pantōn is the cosmic reversal of Genesis 3 — already inaugurated in Christ and the Spirit, awaiting consummation in a new heavens and new earth where the Lord God and the Lamb are themselves the temple. Not a future Mosaic-Davidic political reinstatement.
Revelation 21:23
The Lamb is not called 'light' in Revelation 21:23. He is called 'lamp' — a device that holds and transmits light from another source. John's vocabulary for light, luminaries, and radiance is remarkably varied, and the distinctions are not decorative. They are the theology.