Exodus 29:6-10

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

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

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

And thou shalt gird them with girdles, Aaron and his sons, and put the bonnets on them: and the priest’s office shall be theirs for a perpetual statute: and thou shalt consecrate Aaron and his sons.

And thou shalt cause a bullock to be brought before the tabernacle of the congregation: and Aaron and his sons shall put their hands upon the head of the bullock.