An apocalypse is the end of the world as we know it, and is also known as the final battle between good and evil, or Armageddon. In Christianity, the Book of Revelation reveals the Apocalypse of John and is the last book of the Christian Bible.
An apocalypse translated literally from Greek refers to a revelation of something hidden, although this sense did not enter English until the 14th century. In religious contexts it is usually a revelation of hidden meaning - hidden from human knowledge in an era dominated by falsehood and misconception. In the Revelation of John. Apocalypsis Ioannou), the last book of the New Testament, the revelation which John receives is that of the ultimate victory of good over evil and the end of the present age, and that is the primary meaning of the term, one that dates to 1175.
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