Exodus 29:7-9

Complete Jewish Bible

⁷ Then take the anointing oil, and anoint him by pouring it on his head. ⁸ Bring his sons; put tunics on them; ⁹ wrap sashes around them, Aharon and his sons; and put the headgear on their heads. The office of cohen is to be theirs by a permanent regulation. Thus you will consecrate Aharon and his sons.