Blood is an important theme throughout God’s Message. God is an artist and He expresses Himself in metaphors and word pictures. Blood is a metaphor for life and the shedding of blood is a metaphor for death. All the way back in Genesis 3 God told us that the result of our willing disobedience was death. We are appointed to die and be justly judged.
A sacrifice is made, blood is shed, another dies on our behalf. Ultimately, God would send His own Son to be the ultimate sacrifice – his body broken, his blood shed – to pay the price for our disobedience and redeem us from our guilt. Until that day, a system of animal sacrifice, instituted through Moses, was used as a metaphor for the ultimate sacrifice to come.
Down payment was made on the debt of sin. Blood was shed. It covered the people and their sin…and pointed them towards the ultimate sacrifice to come. Jesus would someday pay our debt of sin in full.