The whole idea of the sacrifice of Christ was to restore the relationship between mankind and God. The previous system of atonement of sins required the sacrifice of animals as outlined in the O.T. this was a preview of what Jesus would eventually have to do to repair the rift between man and God. As in the O.T. it was required that the animals used for sacrifice were pure and unblemished so it was required that Jesus be pure and unblemished. He was born not from the seed of man but of the Holy Spirit and was sinless.
Hebrews 9:22-23 (KJV)
22.And almost all things are by the law purged with blood; and without shedding of blood is no remission.
23.It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.
Now on to his resurrection: One of the most catastrophic results of sin was death there was the spiritual death and the physical death. By the shedding of his blood he defeated spiritual death, and by rising from the dead he defeated physical death therefore giving all who believe in him eternal life.
Hebrews 9:22-23 (KJV)
22.And almost all things are by the law purged with blood; and without shedding of blood is no remission.
23.It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.
Now on to his resurrection: One of the most catastrophic results of sin was death there was the spiritual death and the physical death. By the shedding of his blood he defeated spiritual death, and by rising from the dead he defeated physical death therefore giving all who believe in him eternal life.
There is nothing people will not maintain when they are slaves to superstition
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