Revelation 21:12

It had a great, high wall, with twelve huge gates, and twelve angels in charge of the gates, which had inscribed upon them the names of the twelve tribes of Israel.

Treasury of Scripture Knowledge

Summary

And behold a wall on the outside of the house round about, and in the man's hand a measuring reed of six cubits long by the cubit and an hand breadth: so he measured the breadth of the building, one reed; and the height, one reed.

Bible References

A wall

Revelation 21:12
It had a great, high wall, with twelve huge gates, and twelve angels in charge of the gates, which had inscribed upon them the names of the twelve tribes of Israel.