Hebrews 9:22

Indeed, under the law almost everything is cleansed with blood, and without the shedding of blood there is no forgiveness of sins.

Hebrews 10:4-12

For it is impossible for the blood of bulls and goats to take away sins.

Treasury of Scripture Knowledge

Summary

Wherefore David said unto the Gibeonites, What shall I do for you? and wherewith shall I make the atonement, that ye may bless the inheritance of the LORD?

Bible References

Wherewith

Hebrews 9:22
Indeed, under the law almost everything is cleansed with blood, and without the shedding of blood there is no forgiveness of sins.
Hebrews 10:4
For it is impossible for the blood of bulls and goats to take away sins.