Revelation 21:1 - 4
NKJV - 1 Now I saw a new heaven and a new earth, for the first heaven and the first earth had passed away. Also there was no more sea. 2 Then I, John, saw the holy city, New Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.