Luke 16:26

And besides, there is a great gulf fixed between us and you; so that they, who would pass from hence to you, cannot; nor can they pass to us, who would come from thence.

2 Corinthians 6:17

Wherefore, "come out from the midst of them, and be ye separate, saith the Lord, and touch no unclean thing," and I will receive you:

Revelation 21:10-27

And he carried me away in spirit to a great and high mountain, and he shewed me that great city, the holy Jerusalem, descending out of heaven from God, having the glory of God:

Treasury of Scripture Knowledge

Summary

He measured it by the four sides: it had a wall round about, five hundred reeds long, and five hundred broad, to make a separation between the sanctuary and the profane place.

Five hundred

Bible References

Five hundred

Revelation 21:12
having also a great and high wall, with twelve gates, and at the gates twelve angels; and there were names inscribed, which are the names of the twelve tribes of the sons of Israel.

A separation

Luke 16:26
And besides, there is a great gulf fixed between us and you; so that they, who would pass from hence to you, cannot; nor can they pass to us, who would come from thence.
2 Corinthians 6:17
Wherefore, "come out from the midst of them, and be ye separate, saith the Lord, and touch no unclean thing," and I will receive you:
Revelation 21:10
And he carried me away in spirit to a great and high mountain, and he shewed me that great city, the holy Jerusalem, descending out of heaven from God, having the glory of God: