Revelation 21:15

11 shining with the glory of God. Its radiance was like a most precious jewel, like a jasper, as clear as crystal.

12 The city had a great and high wall with twelve gates inscribed with the names of the twelve tribes of Israel, and twelve angels at the gates.

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

14 The wall of the city had twelve foundations bearing the names of the twelve apostles of the Lamb.

15 The angel who spoke with me had a golden measuring rod to measure the city and its gates and walls.

16 The city lies foursquare, with its width the same as its length. And he measured the city with the rod, and all its dimensions were equal—12,000 stadia in length and width and height.

17 And he measured its wall to be 144 cubits, by the human measure the angel was using.

18 The wall was made of jasper, and the city itself of pure gold, as pure as glass.

19 The foundations of the city walls were adorned with every kind of precious stone: The first foundation was jasper, the second sapphire, the third chalcedony, the fourth emerald,

Read all of Revelation 21