In many Western religious traditions, the period of catastrophic upheaval expected to occur just before the end of the world, when God will come to sit in judgment on humankind.
The belief that the world will come to a violent and cataclysmic end exists in Judaism and Christianity as well as in Zoroastrianism. Several of the prophetic works of the Hebrew Scriptures, notably the book of Daniel , include visions of the apocalypse. The book of eschatology ; millennialism .