Aaron was the first High Priest of the Israelites. He was the brother of Moses and was appointed by God to lead the Israelites in the wilderness. AARON was a Levite, a member of the priestly tribe of Israel, and was responsible for performing religious rituals and offering sacrifices to God. He was also responsible for interpreting the laws of God to the people. AARON's role as High Priest was to serve as a mediator between God and the people of Israel.