Exodus 29:9

6 and thou shalt set the mitre upon his head, and put the holy crown upon the mitre.

7 Then shalt thou take the anointing oil, and pour it upon his head, and anoint him.

8 And thou shalt bring his sons, and put coats upon them.

9 And thou shalt gird them with girdles, Aaron and his sons, and bind head-tires on them: and they shall have the priesthood by a perpetual statute: and thou shalt consecrate Aaron and his sons.

10 And thou shalt bring the bullock before the tent of meeting: and Aaron and his sons shall lay their hands upon the head of the bullock.

11 And thou shalt kill the bullock before Jehovah, at the door of the tent of meeting.

12 And thou shalt take of the blood of the bullock, and put it upon the horns of the altar with thy finger; and thou shalt pour out all the blood at the base of the altar.