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.

Exodus 29:5

29:5 and take the garments and clothe Aaron with the tunic, the robe of the ephod, the ephod, and the breastpiece; you are to fasten the ephod on him by using the skillfully woven waistband.

Exodus 29:28

29:28 It is to belong to Aaron and to his sons from the Israelites, by a perpetual ordinance, for it is a contribution. It is to be a contribution from the Israelites from their peace offerings, their contribution to the Lord.

Exodus 39:1

The Making of the Priestly Garments

39:1 From the blue, purple, and scarlet yarn they made woven garments for serving in the sanctuary; they made holy garments that were for Aaron, just as the Lord had commanded Moses.