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apocalyptic literature (s) (noun), apocalyptic literatures (pl)
A class of Jewish and Christian writings beginning about 250 B.C. and continuing into the opening centuries of A.D.: The purpose of apocalyptic literature was to comfort the faithful in their suffering conditions, and reconcile those conditions with God's righteousness by prefiguring the future triumph of Israel or the Messianic kingdom.
The best-known Christian apocalyptic literature is the Book of Revelation in the New Testament of the Bible.