Where has the word magic come from?

The Word "magic" originally comes from a Persian Word.

The etymology is: Middle English magique, from Middle French; from Latin magice; from Greek magikE; feminine of magikos. Magian, magical, from magos magus, sorcerer, of Iranian origin; akin to Old Persian magus sorcerer." (Webster's)

The Three Magi mentioned in The Bible were probably "sorcerers" rather than astronomers per se.