Ezekiel 45:17-21

And it shall be the prince’s part to provide the burnt offerings, the grain offerings, and the drink offerings, at the feasts, on the new moons, and on the Sabbaths, at all the appointed feasts of the house of Israel; he shall provide the sin offering, the grain offering, the burnt offering, and the peace offerings, to make atonement for the house of Israel.”

‘This is what the Lord God says: “In the first month, on the first of the month, you shall take a bull without blemish and cleanse the sanctuary from sin.

And the priest shall take some of the blood from the sin offering and put it on the door posts of the house, on the four corners of the ledge of the altar, and on the posts of the gate of the inner courtyard.

And you shall do this on the seventh day of the month for everyone who does wrong inadvertently or is naive; so you shall make atonement for the house.

“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.