Exodus 30:30

30:30 “You are to anoint Aaron and his sons and sanctify them, so that they may minister as my priests.

Exodus 31:10

31:10 the woven garments, the holy garments for Aaron the priest and the garments for his sons, to minister as priests,

Exodus 40:13

40:13 Then you are to clothe Aaron with the holy garments and anoint him and sanctify him so that he may minister as my priest.