3 Bible Verses about Walled Towns

clear as crystal, Having a wall great and high, having twelve gates, and at the gates twelve angels, and the names written thereon, which are the names of the twelve tribes of the children of Israel: On the east three gates,

And he measured the wall thereof, an hundred forty-four reeds, the measure of a man, that is, of an angel.

And the walls of the city had twelve foundations, and upon them the twelve names of the twelve apostles of the Lamb.