Numbers 19:21

Hebrews 10:4 NIV
It is impossible for the blood of bulls and goats to take away sins.

Hebrews 9:13-14 NIV
The blood of goats and bulls and the ashes of a heifer sprinkled on those who are ceremonially unclean sanctify them so that they are outwardly clean. How much more, then, will the blood of Christ, who through the eternal Spirit offered himself unblemished to God, cleanse our consciences from acts that lead to death, so that we may serve the living God!