Revelation 21:12

8 But to the cowardly and unbelieving and abominable and murderers and sexually immoral and sorcerers and idolaters and all liars, their place will be in the lake that burns with fire and sulfur. This is the second death.”

9 Then one of the seven angels with the seven bowls full of the seven final plagues came and said to me, “Come, I will show you the bride, the wife of the Lamb.”

10 And he carried me away in the Spirit to a mountain great and high, and showed me the holy city of Jerusalem coming down out of heaven from God,

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.

Read all of Revelation 21