The Most Cataclysmic Chapter of the Bible.

Rev 16

Rev 16:17 And the seventh angel poured out his vial into the air; and there came a great voice out of the temple of heaven, from the throne, saying, It is done. 18 And there were voices, and thunders, and lightnings; and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake, and so great. 19 And the great city was divided into three parts, and the cities of the nations fell: and great Babylon came in remembrance before God, to give unto her the cup of the wine of the fierceness of his wrath. 20 And every island fled away, and the mountains were not found. 21 And there fell upon men a great hail out of heaven, every stone about the weight of a talent: and men blasphemed God because of the plague of the hail; for the plague thereof was exceeding great.

The 7 vials poured out upon the earth by the 7 angels produce mayhem on the grandest scale the planet has ever seen. A quick rundown:
Vial #1: a noisome and grievous sore on all who have the mark of the beast and who worship his image.
Vial #2: seas are turned to blood and all sea life dies.
Vial #3: all rivers and fountains of water are turned to blood.
Vial #4: the sun is enhanced until it scorches men with fire.
Vial #5: the kingdom of the beast is filled with such intense darkness that it is painful to the point where men gnaw their tongues.
Vial #6: the Euphrates is dried up. Demons are belched out of the mouth of Satan, sent forth to round up the armies of the world and draw them to Armageddon.
Vial #7: God declares, "I have had enough!" Lightening, thunders and the worst earthquake in history decimates the landscape. Islands disappear, the mountains crumble, 100 pound hailstones fall from the sky.

Friend, this old sinful world is winding down. So is the patience of heaven. The ages of godlessness have worn thin on the longsuffering of the Lord. He is not willing that any should perish, however, He warned that His Spirit would not always strive with man. Now, the ages are drawing to a close. About 6 1/2 years following the rapture, these events will unfold. It is high time to choose sides. Make sure you are on the right team so you will be an observer during this horrific time rather than a participant.