Revelation 21:13-18 English Standard Version (ESV)

13. on the east three gates, on the north three gates, on the south three gates, and on the west three gates.

14. And the wall of the city had twelve foundations, and on them were the twelve names of the twelve apostles of the Lamb.

15. And the one who spoke with me had a measuring rod of gold to measure the city and its gates and walls.

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

17. He also measured its wall, 144 cubits by human measurement, which is also an angel’s measurement.

18. The wall was built of jasper, while the city was pure gold, like clear glass.

Revelation 21