Revelation 21:14-16

King James Version

¹⁴ And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb.

¹⁵ And he that talked with me had a golden reed to measure the city, and the gates thereof, and the wall thereof.

¹⁶ And the city lieth foursquare, and the length is as large as the breadth: and he measured the city with the reed, twelve thousand furlongs. The length and the breadth and the height of it are equal.