3 Bible Verses about Walled Towns

It has a wall, massive and high, with twelve large gates, and in charge of the gates were twelve angels. And overhead, above the gates, names were inscribed which are those of the twelve tribes of the descendants of Israel.

And he measured the wall of it--a wall of a hundred and forty-four cubits, according to human measure, which was also that of the angel.

The wall of the city had twelve foundation stones, and engraved upon them were twelve names--the names of the twelve Apostles of the Lamb.