the blood of Christ
A Lamb Without Spot or Blemish
Exodus 12:5 (KJV) Your lamb shall be without blemish, a male of the first year: ye shall take it out from the sheep, or from the goats:
Hebrews 9:14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
1 Peter 1:19 But with the precious blood of Christ, as of a lamb without blemish and without spot: