Charles Spurgeon Commentary Revelation 21:15-16

"And he that spake with me had for a measure a golden reed to measure the city, and the gates thereof, and the wall thereof. 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." — Revelation 21:15-16 (ASV)

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

It seems at first to be astounding that the height of a city should be equal to the length and the breadth of it; but if you have traveled in Italy, you must have seen many a city, perched upon a hill, which seemed to be even higher than it was broad or long, if you included the wall of the city, and the houses one above another right up to the loftiest minaret or tower. Yes, like a priceless square casket made all of costly jewels is this wondrous city, equally glorious whichever way you look at it: The length and the breadth and the height of it are equal.