We have mentioned that eschatology is a major concern for Apocalyptic literature. The future is foretold with expected imminent fulfilment. Also, angels and demons appear frequently, such as Uriel in IV Ezra, and Jaoel and Azazel in the Apocalypse of Abraham. Angels are usually portrayed as the mediators of revelations by carrying messages and secrets, or interpreting visions. Upheaval in the supernatural realm of angels usually wreaks havoc in the natural world as Revelation shows.
Symbolism is yet another characteristic.
The visions experienced in Apocalyptic writings often use strange, vivid imagery that is symbolic in nature. Daniel is another book rich in symbolic imagery with features such as the four beasts rising out of the sea standing for four kings. We now turn to the functions of Apocalyptic literature. On the surface, it would appear one of the main functions is to predict the future. However, an analysis beneath the surface of the material makes us aware of deeper essential purposes.