Ezekiel 43:25-27

25“For seven days you are to provide a male goat daily for a sin offering; you are also to provide a young bull and a ram from the flock, both without defect. 26For seven days they are to make atonement for the altar and cleanse it; thus they will dedicate it. 27At the end of these days, from the eighth day on, the priests are to present your burnt offerings and fellowship offerings on the altar. Then I will accept you, declares the Sovereign Lord.”