Revelation 21:23
And the city does not need the sun or the moon to illuminate it, for the splendor of God provides the light for it, and its lamp is the Lamb.
Revelation 22:5
And it will never be nighttime there anymore; they will not need the light of a lamp or of the sun, for the Lord will give them light. And they [i.e., God's servants] will rule [with Christ, See 20:4] forever and ever.
Hebrews 6:1-2
So, we should leave the basic principles of Christ's teaching and go on to maturity. [We should] not lay again a foundation of repentance [i.e., turning away] from deeds of death [i.e., acts that lead to spiritual death or that spring from a spiritually dead person], and of faith in God;