Ezekiel 43:25-27

Young's Literal Translation

²⁵ Seven days thou dost prepare a goat for a sin-offering daily, and a bullock, a son of the herd, and a ram out of the flock, perfect ones, do they prepare.

²⁶ Seven days they purify the altar, and have cleansed it, and filled their hand.

²⁷ And the days are completed, and it hath come to pass on the eighth day, and henceforth, the priests prepare on the altar your burnt-offerings and your peace-offerings, and I have accepted you -- an affirmation of the Lord Jehovah.'