Exodus 28:1
The Clothing of the Priests
28:1 “And you, bring near to you your brother Aaron and his sons with him from among the Israelites, so that they may minister as my priests – Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.
Exodus 28:40
28:40 “For Aaron’s sons you are to make tunics, sashes, and headbands for glory and for beauty.
Exodus 28:43
28:43 These must be on Aaron and his sons when they enter to the tent of meeting, or when they approach the altar to minister in the Holy Place, so that they bear no iniquity and die. It is to be a perpetual ordinance for him and for his descendants after him.