Ezekiel 45:20

18“‘The Lord GOD says: “In the first month, on the first day of the month, you shall take a young bull without defect, and you shall cleanse the sanctuary.

19The priest shall take of the blood of the sin offering and put it on the door posts of the house, and on the four corners of the ledge of the altar, and on the posts of the gate of the inner court.

20So you shall do on the seventh day of the month for everyone who errs, and for him who is simple. So you shall make atonement for the house.

21“‘“In the first month, on the fourteenth day of the month, you shall have the Passover, a feast of seven days; unleavened bread shall be eaten.

22On that day the prince shall prepare for himself and for all the people of the land a bull for a sin offering.