Aaron, ar'un, the elder brother of Moses, always second to him in command, but one of the greatest of the Jewish high priests. He acted as spokesman for Moses when the latter delivered the Jews from the Egyptians, and he was one of the leaders of the nation in its wanderings. When Moses was on Mount Sinai, Aaron made the golden calf which the Israelites worshiped. Aaron was not allowed to enter Canaan, but died and was buried on Mount Hor. See Ex. XXIX; Num. XVI and XX, 8-13.