Exodus 28:2-4

28:2 You must make holy garments for your brother Aaron, for glory and for beauty. 28:3 You are to speak to all who are specially skilled, whom I have filled with the spirit of wisdom, so that they may make Aaron’s garments to set him apart to minister as my priest. 28:4 Now these are the garments that they are to make: a breastpiece, an ephod, a robe, a fitted tunic, a turban, and a sash. They are to make holy garments for your brother Aaron and for his sons, that they may minister as my priests.

Exodus 31:10

31:10 the woven garments, the holy garments for Aaron the priest and the garments for his sons, to minister as priests,

Ezekiel 42:14

42:14 When the priests enter, then they will not go out from the sanctuary to the outer court without taking off their garments in which they minister, for these are holy; they will put on other garments, then they will go near the places where the people are.”