Revelation 9:9-11

American Standard Version

⁹ And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots, of many horses rushing to war. ¹⁰ And they have tails like unto scorpions, and stings; and in their tails is their power to hurt men five months. ¹¹ They have over them as king the angel of the abyss: his name in Hebrew is Abaddon, and in the Greek tongue he hath the name ^[a]Apollyon.