Hebrews 5:4; Hebrews 7:11; Hebrews 9:4

Hebrews 5:4

4 And no one takes the honor to himself, but receives it when he is called by God, even as Aaron was.

Hebrews 7:11

11 Now if perfection was through the Levitical priesthood (for on the basis of it the people received the Law ), what further need was there for another priest to arise according to the order of Melchizedek, and not be designated according to the order of Aaron?

Hebrews 9:4

4 having a golden altar of incense and the ark of the covenant covered on all sides with gold, in which was a golden jar holding the manna, and Aaron's rod which budded, and the tables of the covenant;