Leviticus 4:3; Leviticus 8:14; Exodus 29:1

if it is the anointed priest who wsins, thus bringing guilt on the people, then he shall offer for the sin that he has committed xa bull from the herd without blemish to the Lord for a sin offering.

14 Then he brought fthe bull of the sin offering, and Aaron and his sons glaid their hands on the head of the bull of the sin offering.

Consecration of the Priests

29 Now this is what you shall do to them to consecrate them, that they may serve me as priests. bTake one bull of the herd and two rams without blemish,