Revelation 21:14-16

American Standard Version

¹⁴ And the wall of the city had twelve foundations, and on them twelve names of the twelve apostles of the Lamb. ¹⁵ And he that spake with me had for a measure a golden reed to measure the city, and the ^[a]gates thereof, and the wall thereof. ¹⁶ And the city lieth foursquare, and the length thereof is as great as the breadth: and he measured the city with the reed, twelve thousand furlongs: the length and the breadth and the height thereof are equal.