structural:reformatting, structural:expansion, stylistic:style_transfer
Philosophy of religion

In Ancient Greek philosophy, there is no significant distinction made between good and evil spirits. Under Iranian influence, the sublunary sphere was traced to inspiring angels. Philo of Alexandria already identified the Neo-Platonic interpretation of daemons as angels. The daemons were thought to be intermediary between the supernatural and earthly realm, interpreted by Philo as the Greek term for angels.

In the commentaries of Proclus (4th century) on the Timaeus of Plato, Proclus uses the terminology of "angelic" (aggelikos) and "angel" (aggelos) in relation to metaphysical beings. According to Aristotle, just as there is a Prime Mover, so too, must there be spiritual secondary movers.

Ibn Sina, who drew upon the emanation cosmology of al-Farabi, developed an angelological hierarchy of Intellects, which are created by " the One ". Therefore, the first creation by God was the supreme archangel followed by other archangels, who are identified with lower Intellects. From these Intellects again, emanated lower angels or "moving spheres", from which in turn, emanated other Intellects until it reaches the Intellect, which reigns over the souls. The tenth Intellect is responsible for bringing material forms into being and illuminating the minds.