Exodus 29:5-9

5Take the garments and clothe Aaron with the tunic, the robe of the ephod, the ephod itself, and the breastplate. Fasten the ephod on him with its woven waistband. 6Put the turban on his head and attach the holy diadem to the turban. 7Then take the anointing oil and anoint him by pouring it on his head.

8Present his sons as well and clothe them with tunics. 9Wrap the sashes around Aaron and his sons and tie headbands on them. The priesthood shall be theirs by a permanent statute. In this way you are to ordain Aaron and his sons.