Revelation 1:15; Revelation 9:2

Revelation 1:15

15 His feet were like burnished bronze, when it has been made to glow in a furnace, and His voice was like the sound of many waters.

Revelation 9:2

2 He opened the bottomless pit, and smoke went up out of the pit, like the smoke of a great furnace; and the sun and the air were darkened by the smoke of the pit.