Aaron was the older brother of Moses, who is a major figure in the Bible. He was the first high priest of the Israelites and is mentioned in the Book of Exodus. AARON was the son of Amram and Jochebed, and the brother of Miriam and Moses. He was also the brother-in-law of Hur, who supported Moses during the Exodus. AARON was responsible for leading the Israelites out of Egypt and into the Promised Land.