It is not possible that the blood of bulls and goats could take away sins; Hebrews 10:4.
In the Old Testament, the people of God offered sacrifices over and over to cover their sins. But the blood of the animals didn’t actually “take away sins” (Hebrews 10:11). Only the precious sacrifice of Jesus could do that (C. H. Kasper).
The blood of bulls and goats could only “cover” your sins; turn to Jesus to “wash” your sins away.