Christ’s death on the cross was about the most gruesome one could suffer at the time. The perfect son of God was tortured and slain by sinners. But he rose again, and his death atones for our sins. It pays the debt that sinners owe God.
In order for the redemption of man to be brought about, someone had to die. God said that if man ate of the Tree of the Knowledge of Good and Evil, he would surely die. God couldn’t go back on this, it would have negated his authority, and lessened the offense committed. Man does die: he dies physically. But, in order to atone someone else had to die, someone who had never fallen. This is the reason that it is the son of God who dies. None of the prophets, not even the best of them, would have been good enough. The sacrifice for man had to be perfect.
It is this perfectness that pays the debt of man. God is infinitely higher than every human that ever was, is, or ever will be. He is infinitely better. Only the death of someone better could save mankind. God is the only one, the only thing, in the universe that meets this requirement. When man fell, he pulled the whole of creation crashing down around his ears. There is not an atom, not a nano-particle in the universe that is perfect anymore. Everything has been utterly corrupted.
If something has been utterly corrupted, then obviously the only atonement is through something or someone who is utterly perfect, who is utterly pure. The very fact that Christ was born of a virgin is a symbol of his purity. Only purity can negate and counteract the effects of impurity: of sin. Only complete and utter purity pays for complete and utter depravity and corruption.
Christ redeems us through his blood. Our word excruciating comes from “excrucis” or “out of the cross.” Christ suffered the most painful death man was able to contrive at the time. He was not only tortured physically, but bore all of mankind’s sins.