Mount Megiddo, the site of a prophesied final battle between the forces of good and evil.
Any end of the world, especially by way of a cataclysmic battle or something analogous to one.
The battle itself.
The Book of Revelation.
The unveiling of events prophesied in the Revelation; the second coming and the end of life on Earth; global destruction.
A disaster; a cataclysmic event; destruction or ruin.
A revelation, especially of supernatural events.