Rev RevelationOpinberunarbókin, chapterkafli Revelation of Jesus ChristOpinberunarbók Jóhannesar, chapterkafli 21

And the city lies Foursquare (squared; four cornered), 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.