Leviticus 8:2, 12, 30

“Bring Aaron and his sons, along with their sacred garments, the anointing oil, the bull for the sin offering, the two rams, and the basket of bread made without yeast

Then he poured some of the anointing oil on Aaron’s head, anointing him and making him holy for his work.

Next Moses took some of the anointing oil and some of the blood that was on the altar, and he sprinkled them on Aaron and his garments and on his sons and their garments. In this way, he made Aaron and his sons and their garments holy.