Revelation 21:16 in the King James Version
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.
Context
15 He who spoke with me had for a measure a golden reed to measure the city, its gates, and its walls.
16 The city is square. Its length is as great as its width. He measured the city with the reed: twelve thousand twelve stadia. Its length, width, and height are equal.
17 Its wall is one hundred forty-four cubits, by the measure of a man, that is, of an angel.