Luke 16:26

And beside all this, between us and you there is a great chasm fixed, so that they that would pass hence to you, can not; nor can they that would, pass thence to us.

2 Corinthians 6:17

For this reason, come out from among them, and separate yourselves, says the Lord, and touch not an unclean person, and I will receive you;

Revelation 21:10-27

And he carried me away in spirit to a mountain, great and high, and showed me the holy city, Jerusalem, coming down out of heaven from 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
It had a wall, great and high; and it had twelve gates, and at the gates twelve angels, and names written on them, which are the names of the twelve tribes of the sons of Israel;

A separation

Luke 16:26
And beside all this, between us and you there is a great chasm fixed, so that they that would pass hence to you, can not; nor can they that would, pass thence to us.
2 Corinthians 6:17
For this reason, come out from among them, and separate yourselves, says the Lord, and touch not an unclean person, and I will receive you;
Revelation 21:10
And he carried me away in spirit to a mountain, great and high, and showed me the holy city, Jerusalem, coming down out of heaven from God,