Exodus 29:4-7

4And Aaron and his sons thou shalt bring near the entrance of the tent of meeting, and shalt bathe them with water.

5And thou shalt take the garments, and clothe Aaron with the vest, and the cloak of the ephod, and the ephod, and the breastplate, and shalt gird him with the girdle of the ephod.

6And thou shalt put the turban upon his head, and fasten the holy diadem to the turban,

7and shalt take the anointing oil, and pour [it] on his head, and anoint him.