Revelation 21:1-2

 "And behold, I am coming quickly. 

Blessed is he who heeds the words of the prophecy of this book."     

Revelation 22:7  NASB

 Then I saw "a new heaven and a new earth," for the first heaven and the first earth had passed away, and there was no longer any sea. I saw the Holy City, the new Jerusalem, coming down out of heaven from God, prepared as a bride beautifully dressed for her husband.

Then I saw "a new heaven and a new earth" 
2 Peter 3:13  But in keeping with his promise we are looking forward to a new heaven and a new earth, where righteousness dwells.
Isaiah 65:17  "See, I will create new heavens and a new earth. The former things will not be remembered, nor will they come to mind."

for the first heaven and the first earth had passed away 
Revelation 6:14  The heavens receded like a scroll being rolled up, and every mountain and island was removed from its place.

I saw the Holy City, the new Jerusalem 
Revelation 21:10  And he carried me away in the Spirit to a mountain great and high, and showed me the Holy City, Jerusalem, coming down out of heaven from God.
Isaiah 52:1  Awake, awake, Zion, clothe yourself with strength! Put on your garments of splendor, Jerusalem, the holy city. The uncircumcised and defiled will not enter you again.
Revelation 11:2  But exclude the outer court; do not measure it, because it has been given to the Gentiles. They will trample on the holy city for 42 months.
Revelation 22:19  And if anyone takes words away from this scroll of prophecy, God will take away from that person any share in the tree of life and in the Holy City, which are described in this scroll.

coming down out of heaven from God 
Hebrews 11:10  For he (Abraham) was looking forward to the city with foundations, whose architect and builder is God.
Hebrews 12:22a  But you have come to Mount Zion, to the city of the living God, the heavenly Jerusalem.
Revelation 3:12  "The one who is victorious I will make a pillar in the temple of my God. Never again will they leave it. I will write on them the name of my God and the name of the city of my God, the new Jerusalem, which is coming down out of heaven from my God; and I will also write on them my new name." 

prepared as a bride beautifully dressed for her husband 
Revelation 19:7  "Let us rejoice and be glad and give him glory! For the wedding of the Lamb has come, and his bride has made herself ready."

(parentheses are mine)

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