Exodus 40:13–15

13 And thou shalt put upon Aaron the holy garments, mand anoint him, and sanctify him; that he may minister unto me in the priest’s office. 14 And thou shalt bring his sons, and clothe them with coats: 15 and thou shalt anoint them, as thou didst anoint their father, that they may minister unto me in the priest’s office: for their anointing shall surely be nan everlasting priesthood throughout their generations.