Aaron was an Israelite prophet and the first High Priest of Israel, serving as the elder brother of Moses. Born in Ancient Egypt, he acted as a spokesman for Moses when confronting the Pharaoh and later held a unique religious authority granted through the Law. As the founder of the Aaronide priesthood, he and his male descendants were responsible for performing altar offerings and teaching divine laws to the Israelites. He lived during the period of the Exodus and died on Mount Hor.