Revelation 9:11
King James Version
“And they had a king over them, the angel of the bottomless pit, whose name in the Hebrew tongue Abaddon, but in the Greek tongue hath name Apollyon.”
Context
8And they had hair as the hair of women, and their teeth were as of lions.
9And they had breastplates, as it were breastplates of iron; and the sound of their wings as the sound of chariots of many horses running to battle.
10And they had tails like unto scorpions, and there were stings in their tails: and their power to hurt men five months.
11And they had a king over them, the angel of the bottomless pit, whose name in the Hebrew tongue Abaddon, but in the Greek tongue hath name Apollyon.
12One woe is past; behold, there come two woes more hereafter.
13And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,
14Saying to the sixth angel which had the trumpet, Loose the four angels which are bound in the great river Euphrates.