Revelation 16:21

 "And behold, I am coming quickly. 

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

Revelation 22:7  NASB

From the sky huge hailstones, each weighing about a hundred pounds, fell on people. And they cursed God on account of the plague of hail, because the plague was so terrible. 

From the sky huge hailstones 
Ezekiel 13:13  " 'Therefore this is what the Sovereign LORD says: In my wrath I will unleash a violent wind, and in my anger hailstones and torrents of rain will fall with destructive fury.' "
Ezekiel 38:27  " 'I will execute judgment on  him (Gog) with plague and bloodshed; I will pour down torrents of rain, hailstones and burning sulfur on him and on his troops and on the many nations with him.' "
Revelation 8:7  The first angel sounded his trumpet, and there came hail and fire mixed with blood, and it was hurled down on the earth. A third of the earth was burned up, a third of the trees were burned up, and all the green grass was burned up.
Revelation 11:19  Then God's temple in heaven was opened, and within his temple was seen the ark of his covenant. and there came flashes of lightning, rumblings, peals of thunder, an earthquake and a severe hailstorm.

And they cursed God 
Revelation 16:8-9  The fourth angel poured out his bowl on the sun, and the sun was allowed to scorch people with fire. They were seared by the intense heat and they cursed the name of God, who had control over these plagues, but they refused to repent and glorify him.
Revelation 16:10-11  The fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness. People gnawed their tongues in agony and cursed the God of heaven because of their pains and their sores, but they refused to repent of what they had done.

on account of the plague of hail 
Exodus 9:23-25  When Moses stretched out his staff toward the sky, the LORD sent thunder and hail, and lightning flashed down to the ground. So the LORD rained hail on the land of Egypt; hail fell and lightning flashed back and forth. It was the worst storm in all the land of Egypt since it had become a nation. Throughout Egypt hail struck everything in the fields--both people and animals; it beat down everything growing in the fields and stripped every tree.

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. 
Limited to 15 verses per post.