3 Bible Verses about Walled Towns

It had a wall, great and high; and it had twelve gates, and at the gates twelve angels, and names written on them, which are the names of the twelve tribes of the sons of Israel;

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

And the wall of the city had twelve foundations, and on them were the names of the twelve apostles of the Lamb.