Revelation 9:13-21 - A Third Of Humanity Killed By Plagues

¹³ And the sixth angel sounded its trumpet, and I heard a voice coming from the four horns [i.e., corners] of the golden Altar, which is in front of God. ¹⁴ It said to the sixth angel with the trumpet, "Release the four angels who are tied up at the great Euphrates River." ¹⁵ And the four angels who had been ready for this hour and day and month and year were [now] released to kill one third of mankind. ¹⁶ And the armies of horsemen numbered two hundred million. I was told how many there were. ¹⁷ And this is how the horses and their riders looked in the vision: They had on their chests fire[-red], [smoke-]blue and sulphur[-yellow] armor plate, and the horses' heads were like lions' heads. And fire, smoke and sulphur proceeded out of their mouths. ¹⁸ One third of mankind was killed by these three plagues --- the fire, the smoke and the sulphur, which proceeded out of the horses' mouths. ¹⁹ For the power of the horses [to kill] is in their mouths and in their tails, for their tails are like snakes that have heads with which to harm people.

²⁰ And the rest of mankind, who were not killed by these plagues, [still] did not repent of what they had made with their hands [i.e., their idolatry]. They did not stop worshiping demons, and gold, silver, brass, stone and wooden idols, which can neither see, nor hear nor walk. ²¹ And they refused to repent of their murders, their sorceries, their sexual immorality and their thievery.