On the first new year"s day of each year the people should offer a young bull without blemish to cleanse the accumulated sinful defilement of the sanctuary. The priest in charge was to apply some of the blood of a sin offering to the door frames of the temple proper, the four corners of the altar of sacrifice, and the door frames of the inner court of the temple. Another offering was to occur on the seventh day of the new year, and it would cover the guilt of sins committed ignorantly. It too would result in the cleansing of the temple for another year. [source][source][source]