Genesis 37:5

5. And Joseph dreamed a dream, and he told it his brethren “In normal sleep there is inactivity of the senses, and consequently of the powers of perception by the senses, (presentative powers,) as well as of continuous and rational thought, while there may, at the same time, be activity of memory and imagination, (representative powers,) reproducing and fantastically combining the waking thoughts, thus causing dreams . Our lower as well as higher powers the sleeping as well as the waking mind may become the vehicle of divine revelation . Yet the Scriptures refer to the revelations received in sleep as if inferior in grade and character to those which involve the higher faculties of perception, understanding, and reason. It is in dreams that God reveals himself to the heathen, (Abimelech, Pharaoh, Nebuchadnezzar,) but to the seers of the chosen people only, as a general rule, in the prophet’s preparatory or rudimentary period. See Blackie’s Iliad, iv, p. 12. These accounts cannot fairly lead us to consider our mental operations in sleep as any more supernaturally guided than those of our waking hours. Neither can have prophetic authority unless inspired.” Newhall.