Revelation 21:25

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

Revelation 22:5

And there shall be no night there, neither is there need of a lamp, or of the light of the sun; for the Lord God will give them light, and they shall reign for ever.

Revelation 21:23

And the city hath no need of the sun, neither of the moon, to shine on it; for the glory of God hath inlightened it, and the Lamb is the lamp thereof.

Treasury of Scripture Knowledge

Summary

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

Bible References

For

Revelation 22:5
And there shall be no night there, neither is there need of a lamp, or of the light of the sun; for the Lord God will give them light, and they shall reign for ever.