The life of any creature is in the blood; without blood no one can survive: Leviticus 17:11.
Even every tradition believe in the power of blood,that is why people sacrifice blood of goat,chicken,ram, even some go deeper sacrificing human blood.
Jesus came to shedd his blood for the remmmission of our sin,because he was sinless; 1John 1:7-9, Matthew 27, John 6:45-70.
Reason on the last day, you must have been washed by the blood of the Lamb to find your name in the Book of Life, Revelations 20:11-15.
Jesus is the Lamb of God that takes away the sin of the World, John 1-end.
You can see how powerful the Blood is; the Blood is the Blood of Jesus, John 17!