Revelation 15:1

 "And behold, I am coming quickly. 

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

Revelation 22:7  NASB

I saw in heaven another great and marvelous sign: seven angels with the last seven plagues--last, because with them God's wrath is completed.

I saw in heaven another great and marvelous sign 
Revelation 12:1  A great sign appeared in heaven: a woman clothed with the sun, with the moon under her feet and a crown of twelve stars on her head.
Revelation 12:3  Then another sign appeared in heaven: an enormous red dragon with seven heads and ten horns and seven crowns on its heads.

seven angels 
Revelation 15:6-8  Out of the temple came the seven angels with the seven plagues. They were dressed in clean, shining linen and wore golden sashes around their chests. Then one of the four living creatures gave to the seven angels seven golden bowls filled with the wrath of God, who lives for ever and ever. And the temple was filled with smoke from the glory of God and from his power, and no one could enter the temple until the seven plagues of the seven angels were completed. 
Revelation 16:1  Then I heard a loud voice from the temple saying to the seven angels, "Go, pour out the seven bowls of God's wrath on the earth."
Revelation 17:1  One of the seven angels who had the seven bowls came and said to me, "Come, I will show you the punishment of the great prostitute, who sits by many waters."
Revelation 21:9  One of the seven angels who had the seven bowls full of the seven last plagues came to me and said, "Come, I will show you the bride, the wife of the Lamb."

with the seven last plagues 
Revelation 9:20-21  The rest of mankind who were not killed by these plagues still did not repent of the work of their hands; they did not stop worshiping demons, and idols of gold, silver, bronze, stone and wood--idols that cannot see or hear or walk. Nor did they repent of their murders, their magic arts, their sexual immorality or their thefts.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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