'The Twelve' in the Bible

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

And the twelve gates were twelve pearls: each of the gates was of one pearl. And the street of the city was pure gold, like transparent glass.