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

¹³ And the sixth angel sounded, and I heard a great voice from the four horns of the altar of gold which is before God, ¹⁴ saying to the sixth angel who held the trumpet, Loose the four angels which are bound at the great river Euphrates. ¹⁵ And the four angels were loosed, who were ready at the hour, and day, and month, and year, to kill the third part of mankind. ¹⁶ And the number of the armies of cavalry was two myriads of myriads and I heard the number of them. ¹⁷ And in this manner saw I the horses in the vision, and those who were mounted upon them, having breastplates of the colour of fire, and jacinth, and sulphur; and the horses' heads were as the heads of lions; and out of their mouths proceeded fire and smoke and brimstone. ¹⁸ By these three were slain the third part of mankind, by the fire, and by the smoke, and by the sulphur, which proceeded out of their mouths. ¹⁹ For their powers are in their mouth, and in their tails; for their tails are like serpents, having heads, and with them they do hurt.

²⁰ And the residue of mankind, who were not slain by these plagues, repented not of the works of their hands, that they should not worship demons, and idols of gold, and of silver, and of brass, and of wood, and of stone: which can neither see nor hear, nor walk: ²¹ and they repented not of their murders, nor of their magical arts, nor of their whoredom, nor of their thefts.