Revelation 21:16

“And the city lieth four square, etc.] To the four corners of the world, from whence its inhabitants come, and denotes the regularity, uniformity, perfection, and immovableness of it. And the length is as large as the breadth; this church state will be all of a piece, perfect, entire, and wanting nothing. And he measured the city with the reed, twelve thousand furlongs; or fifteen hundred miles; a monstrously large city indeed! such an one as never was upon earth; (see <264835>Ezekiel 48:35) and which shows, that this is not to be understood literally, but mystically; and intends the capaciousness of it, here being room enough for all the twelve tribes of Israel; that is, for all the elect of…”

“twelve thousand furlongs--literally, "to twelve thousand stadii": one thousand furlongs being the space between the several twelve gates. BENGEL makes the length of each side of the city to be twelve thousand stadii. The stupendous height, length, and breadth being exactly alike, imply its faultless symmetry, transcending in glory all our most glowing conceptions.”

“And the city lieth four-square - It was an exact square. That is, there was nothing irregular about it; there were no crooked walls; there was no jutting out, and no indentation in the walls, as if the city had been built at different times without a plan, and had been accommodated to circumstances. Most cities have been determined in their outline by the character of the ground - by hills, streams, or ravines; or have grown up by accretions, where one part has been joined to another, so that there is no regularity, and so that the original plan, if there was any, has been lost sight of. The New Jerusalem, on the contrary, had been built according to a plan of the utmost regularity, which…”

“21:16 The city is described as a perfect cube. Each dimension is 1,400 miles (Greek 12,000 stadia); the number 12,000 symbolically represents the people of God (see “Symbolic Numbers” Theme Note).”

“four square, The square form of this city probably denotes its stability; while its vast dimensions, being 1,500 miles on each side, are emblematical of magnificence, and of its capability of containing all the multitude of inhabitants which should ever enter it, however immense or innumerable. Eze 48:17, Eze 48:18, Eze 48:20, Eze 48:35 twelve: Eze 48:8-19 Revelation 21:17”