Revelation 9:11

English Standard Version

11 They have as king over them the angel of the bottomless pit. His name in Hebrew is Abaddon, and in Greek he is called Apollyon.[1] (Job18:14; Job26:6; Pr30:27; Eph2:2)

New International Version

11 They had as king over them the angel of the Abyss, whose name in Hebrew is Abaddon and in Greek is Apollyon (that is, Destroyer).

New Int. Readers Version

11 Their king was the angel of the Abyss. In the Hebrew language his name is Abaddon. In Greek it is Apollyon.

King James Version

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