Revelation 16:17-18

 "And behold, I am coming quickly. 

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

Revelation 22:7  NASB

The seventh angel poured out his bowl into the air, and out of the temple came a loud voice from the throne, saying, "It is done!" Then there came flashes of lightning, rumblings, peals of thunder and a severe earthquake. No earthquake like it has ever occurred since mankind has been on earth, so tremendous was the quake.

The seventh angel poured out his bowl into the air 
Ephesians 2:1-2  As for you, you were dead in your transgressions and sins, in which you used to live when you followed the ways of this world and of the ruler of the kingdom of the air, the spirit who is now at work in those who are disobedient.

and out of the temple 
Revelation 14:15  Then another angel came out of the temple and called in a loud voice to him who was sitting on the cloud, "Take your sickle and reap, because the time to reap has come, for the harvest of the earth is ripe."

came a loud voice from the throne 
Revelation 11:15  The seventh angel sounded his trumpet, and there were loud voices in heaven, which said: "The kingdom of the world has become the kingdom of our Lord and of his Messiah, and he will reign for ever and ever." 

saying, "It is done!" 
Revelation 21:6-7  He said to me: "It is done. I am the Alpha and the Omega, the Beginning and the End. To the thirsty I will give water without cost from the spring of the water of life. Those who are victorious will inherit all this, and I will be their God and they will be my children."

Then, there came flashes of lightning, rumblings, peals of thunder 
Revelation 4:5  From the throne came flashes of lightning, rumblings and peals of thunder. In front of the throne, seven lamps were blazing. These are the seven spirits of God.

and a severe earthquake 
Revelation 6:12  I watched as he opened the sixth seal. There was a great earthquake. The sun turned black like sackcloth made of goat hair, the whole moon turned blood red, and the stars in the sky fell to earth, as figs drop from a fig tree when shaken by a strong wind.

No earthquake like it has ever occurred since mankind has been on earth 
Daniel 12:1  "At that time Michael, the great prince who protects your people, will arise. There will be a time of distress such as has not happened from the beginning of nations until then. But at that time your people--everyone whose name is found written in the book--will be delivered."
Matthew 24:21  "For then there will be great distress, unequaled from the beginning of the world until now--and never to be equaled again."

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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