Blood Relatives
blood = life
Once sin happened, these variables had a new relative.
blood = life = sin
How is this known? The life is the blood. This is a one-to-one relationship. The true God has no provision for one sinner's blood being used to atone, save the life of another. Violating this one to one relationship is a grave sin. The true God requires that He receive all our blood back.
Paul makes it clear that death entered the world through Adam. That death was by sin. Death was passed to all humanity simultaneously with conception, life, making blood equal to sin.
Your blood does not save life. Jesus sinless blood saved your life. All our lives Christ saved. The life of every conceived human being; covered in Christ's sacrifice. The miracles of feeding the crowds to satisfaction with only a few loaves proves this. Since the true God could not use sin's blood to save life, we cannot. Quit banking and selling sin.