3 Bible Verses about Walled Towns

It had a great, high wall, with twelve gates, and at the gates twelve angels, and on the gates were written the names of the twelve tribes of the sons of Israel.

He also measured its wall, a hundred and forty-four cubits by a man's measure, which is also an angel's.

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