'The Twelve' in the Bible

And it had a great and high wall, with twelve gates. And on the gates were twelve angels, and having names inscribed, which are the names of the twelve tribes of the sons of Israel:

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

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