“The Lord held to this orderly plan in administering the covenant of his mercy: as the day of full revelation approached with the passing of time, the more he increased each day the brightness of its manifestation. Accordingly, at the beginning when the first promise of salvation was given to Adam [Gen. 3:15] it glowed like a feeble spark. Then, as it was added to, the light grew in fullness breaking forth increasingly and shedding its radiance more widely. At last — when all the clouds were dispersed — Christ the Sun of Righteousness fully illumined the whole earth.”
- John Calvin
The Son is the radiance of God's glory and the exact representation of his being, sustaining all things by his powerful word.
-- Hebrews 1:3
The city does not need the sun or the moon to shine on it, for the glory of God gives it light, and the Lamb is its lamp.
-- Revelation 21:23