From the Hebrew name אַהֲרֹן ('Aharon) which is most likely of unknown Egyptian origin. Other theories claim a Hebrew derivation, and suggest meanings such as "high mountain" or "exalted". In the Old Testament this name is borne by the older brother of Moses and the first high priest of the Israelites. He acted as a spokesman for his brother, and carried a miraculous rod. As an English name, Aaron has been in use since the Protestant Reformation.