Hebrews 10:3-4

But in them a remembrance of sins is made every year. For it is impossible that with the blood of oxen and goats sins should be taken way. The sacrifices of the former law, even that great sacrifice on the day of expiation, when victims were offered for the ignorances or sins of the priests, and of all the people, were only types and figures of Christ's sacrifice upon the cross, it was impossible that they themselves should take away sins, like that one oblation of Christ, though in them was made a remembrance of sins, and of the same sins for which so many victims had been offered. (Witham)