Revelation 21:15

13On the east were three gates, and on the north three gates, and on the south three gates, and on the west three gates.

14The wall of the city had twelve foundations, and on them twelve names of the twelve Apostles of the Lamb.

15He who spoke with me had for a measure a golden reed to measure the city, its gates, and its walls.

16The 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.

17Its wall is one hundred forty-four cubits, by the measure of a man, that is, of an angel.