Leviticus 4:3
3 if it is the zanointed priest who sins, thus bringing guilt on the people, then he shall offer afor the sin that he has committed a bull from the herd bwithout blemish to the Lord for a csin offering.
Leviticus 8:14
14 Then he brought the bull of the sin offering, and Aaron and his sons vlaid their hands on the head of the bull of the sin offering.
Exodus 29:1
Consecration of the Priests
1 k“Now this is what you shall do to them to lconsecrate them, that they may serve me as priests. Take one bull of the herd and two rams without blemish,