All through the Old Testament, we see a preference for a specific type of sacrifice to be offered by men to God- the blood sacrifice. It was as though God couldn’t accept any sacrifice except it contained blood, little wonder, that God accepted Abel and his offering but didn’t look with favour upon Cain’s.
Certainly, there must be something about this blood thing that makes God accept it over others, at least you and I know that God isn’t a vampire who is obsessed with blood.
One obvious fact about the blood of an animal or being is that, it is the life of the flesh and the scripture testifies to this,
“For the life of the flesh is in the blood, and I have given you the blood to sprinkle upon the altar as an atonement for your souls; it is the blood that makes atonement, because it is the life” – Leviticus 17:11
We also know from Biology (the science of life/living things) and other medical sciences that the blood carries Oxygen and other essential components that sustain the body, and without the continuous flow of blood, the body dies.
Covenants are also sealed with blood. Being a Nigerian, I have watched countless Nollywood movies (especially the traditional Yoruba ones), where people cut themselves, and then drink each other’s blood in order to enter into a covenant. But this didn’t originate from Nigerian movies; it has been so from the very beginning. In Exodus 24:8, God speaking through Moses, made it known that blood was used to seal and confirm covenants.
‘Then Moses threw the blood from the basins towards the people and said, “This blood confirms and seals the covenant that God made with you in giving these laws”‘.
Blood played a very significant role in our redemption. The blood of Jesus Christ is the seal of the New Covenant.