Ezekiel 45:17-20

Context
45:17 It will be the duty of the prince to provide the burnt offerings, the grain offering, and the drink offering at festivals, on the new moons and Sabbaths, at all the appointed feasts of the house of Israel; he will provide the sin offering, the grain offering, the burnt offering, and the peace offerings to make atonement for the house of Israel.

45:18 “‘This is what the sovereign Lord says: In the first month, on the first day of the month, you must take an unblemished young bull and purify the sanctuary. 45:19 The priest will take some of the blood of the sin offering and place it on the doorpost of the temple, on the four corners of the ledge of the altar, and on the doorpost of the gate of the inner court. 45:20 This is what you must do on the seventh day of the month for anyone who sins inadvertently or through ignorance; so you will make atonement for the temple.