Revelation 9:9-11

21st Century King James Version

⁹ And they had breastplates like breastplates of iron, and the sound of their wings was as the sound of chariots with many horses running to battle.

¹⁰ And they had tails like unto scorpions, and there were stingers in their tails; and their power was to hurt men five months.

¹¹ And they had a king over them, the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue his name is Apollyon.