Exodus 40:13-16 New King James Version (NKJV)

13. You shall put the holy garments on Aaron, and anoint him and consecrate him, that he may minister to Me as priest.

14. And you shall bring his sons and clothe them with tunics.

15. You shall anoint them, as you anointed their father, that they may minister to Me as priests; for their anointing shall surely be an everlasting priesthood throughout their generations.”

16. Thus Moses did; according to all that the Lord had commanded him, so he did.

Exodus 40