Revelation 21:23-25

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.

And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honour into it.

And the gates of it shall not be shut at all by day: for there shall be no night there.