Revelation 9:13-21 - A Third Of Humanity Killed By Plagues
13 Then the sixth angel blew his trumpet, and I heard a voice from the corners of the altar of gold that was before God 14 say to the sixth angel who had the trumpet, "Release the four angels that are bound at the great river Euphrates." 15 Then the four angels who were held in readiness for that hour and day and month and year were let loose to kill one third of mankind. 16 The number of the hosts of horsemen was twice 10,000 times 10,000; I heard their number. 17 And this was how the horses and their riders looked in my vision: Their breast-plates were fire red, dark blue, and yellow. The horses' heads were like lions' heads, and fire, smoke, and sulphur poured from their mouths. 18 One third of mankind were killed by these three plagues??he fire, smoke, and sulphur that poured from their mouths. 19 For the power of the horses lay in their mouths and their tails; their tails were like snakes, and they had heads with which they hurt people.
20 Yet what was left of mankind, those who escaped being killed by these plagues, did not repent of the works of their hands and give up worshiping demons and gold, silver, bronze, stone, and wooden idols, which cannot either see or hear or move, 21 and they did not repent of their murders, or their magic arts, or their immorality, or their thefts.