For every kohen gadol taken from among men is appointed to act on behalf of people in matters relating to God, so that he may offer gifts and sacrifices for sins.
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.”
By faith Abel offered God a better sacrifice than Cain. Through faith he was commended as righteous when God approved of his gifts. And through faith he still speaks, although he is dead.
Therefore He had to be made like His brothers in all things, so He might become a merciful and faithful Kohen Gadol in matters relating to God, to make atonement for the sins of the people.
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.
It is a symbol for the present time. Accordingly, gifts and sacrifices are being offered that cannot make the worshiper perfect with respect to conscience.