Revelation 21:15

having a great and high wall with 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.

On the east were three gates, and on the north three gates, and on the south three gates, and on the west three gates.

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

The city is square. Its length is as great as its width. He measured the city with the reed: twelve thousand twelve stadia. Its length, width, and height are equal.

Its wall is one hundred forty-four cubits, by the measure of a man, that is, of an angel.

The construction of its wall was jasper. The city was pure gold, like pure glass.