AARON (St.) High Priest of the Old Law. (July 1) (15th cent. B.C.) The great grandson of Levi, son of Jacob, and the first of the Jewish High Priests, to which office he was appointed by God Himself. He was the brother of Moses, the Hebrew Lawgiver, with whom he shared the leadership of the people of Israel. Like Moses, he never entered the land of Promise ; but died on Mount Hor, on the borders of Edom. He was succeeded by his son Eliezer (B.C. 1471) In art he is represented with a rod in flower, a censer and a Jewish mitre. The Book of Exodus contains all that we know concerning him.