Ezekiel 43:19-21

“‘For a sin offering, give a bull to the priests, the Levitical priests who are from the family of Zadok who come into my presence to serve me. Take some of its blood and smear it on the four horns of the altar that project from the four corners of the top ledge and all around the lip. That’s to purify the altar and make it fit for the sacrifice. Then take the bull for the sin offerings and burn it in the place set aside for this in the courtyard outside the Sanctuary.