Ezekiel 45:18-20

Lord YAHWEH says: “On the first day of each new year, you must select a perfect young bull without blemish to sacrifice to purify the sanctuary. The priest must take the blood of the sin offering and smear it on the doorposts of the temple, on the four corners of the ledge of the altar, and on the posts of the gate to the inner courtyard. You must do the same seven days later, on behalf of anyone who has sinned unintentionally or through ignorance. In this way you will purify the temple.