Ezekiel 45:20 ASV

¹⁸  Thus saith the Lord Jehovah: In the first `month', in the first `day' of the month, thou shalt take a young bullock without blemish; and thou shalt cleanse the sanctuary.

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

²⁰  And so thou shalt do on the seventh `day' of the month for every one that erreth, and for him that is simple: so shall ye make atonement for the house.

²¹  In the first `month', in the fourteenth day of the month, ye shall have the passover, a feast of seven days; unleavened bread shall be eaten.

²²  And upon that day shall the prince prepare for himself and for all the people of the land a bullock for a sin-offering.