Revelation 21:11-18

11It had the glory of God. Its light was like a valuable gem, like gray quartz, as clear as crystal.

12It had a large, high wall with 12 gates. Twelve angels were at the gates. The names of the 12 tribes of Israel were written on the gates.

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

14The wall of the city had 12 foundations. The 12 names of the 12 apostles of the lamb were written on them.

15The angel who was talking to me had a gold measuring stick to measure the city, its gates, and its wall.

16The city was square. It was as wide as it was long. He measured the city with the stick. It was 12,000 stadia  long. Its length, width, and height were the same.

17He measured its wall. According to human measurement, which the angel was using, it was 144 cubits.

18Its wall was made of gray quartz. The city was made of pure gold, as clear as glass.