“Also Aaron is to present the bull of the sin offering which is for himself and so make atonement for himself and his house. He is to slaughter the bull of the sin offering which is for himself.
Moses said to Aaron, “Draw near to the altar, and bring your sin offering, and your burnt offering, and make atonement for yourself and for the people. Then present the offering for the people, and make atonement for them, as Adonai commanded.”
He has no need to offer up sacrifices day by day like those other kohanim g’dolim—first for their own sins and then for the sins of the people. For when He offered up Himself, He did this once for all.
but into the inner, once a year, the kohen gadol alone— and not without blood which he offers for himself and for the unintentional sins of the people.