Ezekiel 45:19-21

New Revised Standard Version, Anglicised Catholic Edition

¹⁹ The priest shall take some of the blood of the sin-offering and put it on the doorposts of the temple, the four corners of the ledge of the altar, and the posts of the gate of the inner court. ²⁰ You shall do the same on the seventh day of the month for anyone who has sinned through error or ignorance; so you shall make atonement for the temple.

²¹ In the first month, on the fourteenth day of the month, you shall celebrate the festival of the passover, and for seven days unleavened bread shall be eaten.