Exodus 28:1
Next, bring near to you your brother Aaron from among the Israelites, along with his sons Nadab, Abihu, Eleazar, and Ithamar, to serve Me as priests.

Exodus 39:1
From the blue, purple, and scarlet yarn the craftsmen made specially woven garments for ministry in the sanctuary, as well as the holy garments for Aaron, just as the LORD had commanded Moses.

Leviticus 8:7, 8, 13
He put the tunic on Aaron, tied the sash around him, clothed him with the robe, and put the ephod on him. He tied the woven band of the ephod around him and fastened it to him. . . .

Numbers 4:5-14
Whenever the camp sets out, Aaron and his sons are to go in, take down the veil of the curtain, and cover the Ark of the Testimony with it. . . .