In the Bible, Aaron (???????), or Aaron the Levite, was the brother of Moses. He was the great-grandson of Levi (Ex. 6:16-20) and represented the priestly functions of his tribe, becoming the first High Priest of the Jews. While Moses was receiving his education at the Egyptian royal court and during his exile among the Midianites, Aaron and his sister remained with their kinsmen in the eastern border-land of Egypt (Goshen). He there gained a name for eloquent and persuasive speech; so that when the time came for the demand upon the Pharaoh to release Israel from captivity, Aaron became his brother’s "nabi", or spokesman, to his own people (Ex. 4:16) and, after their unwillingness to hear, to the Pharaoh himself (Ex. 7:9). He is said to have flourished about 1200 BC (traditionally 1597 BC)   Wikipedia