The blood of bulls and goats could not take away sins but only covered sins temporarily, procuring partial and progressive forgiveness for sinners under the Law.

But the blood of Christ blots out sins completely, procuring unlimited and eternal forgiveness of sins once for all time for sinners.

Christ's one sacrifice for sins took care of sins forever!

Part 6 of this enlightening teaching series clearly explains and presents the nature of forgiveness under the New Covenant.