Aaron

Aaron, the brother of Moses, was the first high priest in Israel. He was succeeded by his eldest (surviving) son, Eleazar. The high priest (Heb. hakkohen, "the priest," hakkohen haggadol, "the great Priest") had the highest position in the Israelite hierarchy. Like a king in his coronation the high priest also was anointed. He wore special garments, had a crown, and a breastplate which contained the urim and the thummim. He entered the holy of holies in person on Yom Kippur to make atonement for the sins of his own house as well as the sins of the nation. Aaron as high priest was a type of Christ. His duties, clothing, his ministry was all a type of the Messiah.

Heb 9:11-12 But Christ came as High Priest of the good things to come, with the greater and more perfect tabernacle not made with hands, that is, not of this creation. Not with the blood of goats and calves, but with His own blood He entered the Most Holy Place once for all, having obtained eternal redemption.