Revelation 9:11-13 They have a king over them, the angel of the abyss. His name in Hebrew is Abaddon, and in the Greek, he has the name Apollyon.

BLB⁽ⁱ⁾ ¹¹ They have a king over them, the angel of the abyss. His name in Hebrew is Abaddon, and in the Greek, he has the name Apollyon. ¹² The first woe has passed. Behold, two woes still are coming after these things. ¹³ And the sixth angel sounded his trumpet, and I heard one voice from the four horns of the golden altar before God,