Exodus 40:12-15

12Then you shall 1bring Aaron and his sons to the doorway of the tent of meeting and wash them with water.

13And 2you shall put the holy garments on Aaron and anoint him and consecrate him, so that he may serve as a priest to Me.

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

15and you shall anoint them just as you have anointed their father, so that they may serve as priests to Me; and their anointing will 3qualify them for a 4permanent priesthood throughout their generations.”