3 Bible Verses about Walled Towns

having a great and high wall; having also twelve gates, and over the gates twelve angels, and names written upon them, which are the names of the twelve tribes of the sons of Israel:

And he measured its wall, one hundred and forty-four cubits, according to the measure of a man, that is, of an angel.

And the wall of the city had twelve foundations; and on them the names of the twelve Apostles of the Lamb.