SJR
Revelation
Chapter 9
2
And he opened the bottomless pit; and there arose a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit.
SJR's Note
Feb 1
Cross reference Revelation 16:10 and the fifth vial judgement where the Antichrist's "kingdom was full of darkness."