Behistun Inscription
Magi (; singular magus ; from Latin "magus") were priests in Zoroastrianism and the earlier religions of the western Iranians. The earliest known use of the word "magi" is in the trilingual inscription written by Darius the Great, known as the Behistun Inscription. Old Persian texts, predating the Hellenistic period, refer to a magus as a Zurvanic, and presumably Zoroastrian, priest.