Veridical dream

Oneiromancy (from the Greek όνειροϛ oneiros, dream, and μαντεία manteia, prophecy) is a form of divination based upon dreams; it is a system of dream interpretation that uses dreams to predict the future.

Dreams occur throughout the Bible as omens or messages from God;

Deuteronomy 13:1-5 offers instruction about those who claim to have inspired but false dreams. In Acts 2:17, the apostle Peter quotes Joel 2:28, saying that because of the Spirit now out poured, "...your old men will dream dreams."

Oneirocritic literature is the traditional (ancient and medieval) literary format of dream interpretation. The ancient sources of oneirocritic literature are Kemetian (Aegyptian), Akkadian (Babylonian), and Hellenic (Greek). The medieval sources of oneirocritic literature are Āstika (Hindu), Persian, Arabic, and European.

The oldest oneirocritic manuscript hitherto discovered is the "Ramesside dream-book" now in the British Museum. A unique exemplar of a book of dream-interpretation from pre-Hellenistic Egypt, the surviving fragments were translated into English by Kasia Szpakowska.

The Epic of Gilgamesh reflects heavily on the belief that our ancients looked to our dreams to predict, roughly, our future, by Gilgamesh's persistence to "sleep on things" and gather information from his dreams before making decisions. The story has been retold countless times.

This was a section of the extensive omen-literature, the most notable exemplar of which was the “Dream Book,” Iškar Zaqīqu.

Dream divination was a common feature of Greek and Roman religion and literature of all genres. Aristotle and Plato discuss dreams in various works. The only surviving Greco-Roman dreambook, the Oneirocritica, was written by Artemidorus. Artemidorus cites a large number of previous authors, all of whom are now lost. These include Artemidoros, Astrampsychos, Nikephoros, Germanos, and Manuel Palaiologos.

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