'The Twelve' in the Bible

And having a wall great and high, and having twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel:

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

And the twelve gates were twelve pearls: each of the gates was a single pearl: and the street of the city was pure gold, as it were transparent glass.