Exodus 29:5-9

5and 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.

6You are to put the turban on his head and put the holy diadem on the turban.

7You are to take the anointing oil and pour it on his head and anoint him.

8You are to present his sons and clothe them with tunics

9and wrap the sashes around Aaron and his sons and put headbands on them, and so the ministry of priesthood will belong to them by a perpetual ordinance. Thus you are to consecrate Aaron and his sons.