Exodus 40:13-15

131You shall put the holy garments on Aaron and anoint him and consecrate him, that he may minister as a priest to Me.

14You shall bring his sons and put tunics on them;

15and you shall anoint them even as you have anointed their father, that they may minister as priests to Me; and their anointing will 2qualify them for a 3perpetual priesthood throughout their generations.”