Revelation 9:11-13

Darby Translation

¹¹ They have a king over them, the angel of the abyss: his name in Hebrew, Abaddon, and in Greek he has [for] name Apollyon.

¹² The first woe has passed. Behold, there come yet two woes after these things.

¹³ And the sixth angel sounded [his] trumpet: and I heard a voice from the four horns of the golden altar which [is] before God,