“And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.”
King James Version (KJV)
21:23 The glory of God - Infinitely brighter than the shining of the sun.
Re 21:23 And the city had no need of the sun, neither of the moon. Night never settles down to shut out its splendor, and eternal light, springing from the brightness of God and the Lamb, precludes the need of a sun or moon.