'The Twelve' in the Bible

And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written on them, which are the names of the twelve tribes of the children 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; every several gate was of one pearl; and the street of the city was pure gold, as it were transparent glass.