Revelation 9:13

9 They also had thoraxes like breastplates of iron, and the sound of their wings was like the roar of many horses and chariots rushing into battle.

10 They had tails with stingers like scorpions, which had the power to injure people for five months.

11 They were ruled by a king, the angel of the Abyss. His name in Hebrew is Abaddon, and in Greek it is Apollyon.

12 The first woe has passed. Behold, two woes are still to follow.

13 Then the sixth angel sounded his trumpet, and I heard a voice from the four horns of the golden altar before God

14 saying to the sixth angel with the trumpet, “Release the four angels who are bound at the great river Euphrates.”

15 So the four angels who had been prepared for this hour and day and month and year were released to kill a third of mankind.

16 And the number of mounted troops was two hundred million; I heard their number.

17 Now the horses and riders in my vision looked like this: The riders had breastplates the colors of fire, sapphire, and sulfur. The heads of the horses were like the heads of lions, and out of their mouths proceeded fire, smoke, and sulfur.

Read all of Revelation 9