Ezekiel 48:20; Revelation 21:16

20 The whole portion that dyou shall set apart shall be 25,000 cubits square, that is, the holy portion together with the property of the city.

16 The city lies foursquare, its length the same as its width. And he measured the city with his rod, 12,000 stadia.1 Its length and width and height are equal.