3 Bible Verses about Walled Towns

having a wall great and high; having twelve gates, and at the gates twelve angels, and names inscribed, which are the names of the twelve tribes of the sons of Israel;

And he measured its wall a hundred and forty-four cubits, a man's measure, that is, an angel's.

and the wall of the city, having twelve foundations; and on them, twelve names of the twelve apostles of the Lamb.