I may get shot for this but.............
As the years pass I find a self tendency to return to a more "old time" simplistic approach to such questions. Nostalgia maybe, I don't know. Perhaps it's just a desire to avoid additional over taxation on aging brain cells. Or maybe I just don't know any better. At any rate, let's see how this fits.
Genesis 2:17 (KJV)
17 But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
Right here in this verse God established death for disobedience! Now Adam may or may not have had a concept of sin. I don't know, he may not have even understood what it meant to die. After all he had not witnessed death at the time. Without an attempt to define either, we can now however, safely conclude it would be a sin if Adam ate this fruit. Without doubt, he knew he was to not partake due to God's command. Just as man does today Adam disobeyed, ate of the fruit and committed sin. In turn God's word became reality death and sin entered the world. Death, both physical and spiritual, the result of sin. Spiritual came immediately, the physical process began. Now I suppose we could stop here with the simple statement, "Death is required payment for sin because God said so." But you've got the old rusty gears moving in my head and I'm having interesting thoughts. Let's take it a little further and jump over to;
Leviticus 17:14 (KJV)
14 For it is the life of all flesh; the blood of it is for the life thereof: therefore I said unto the children of Israel, Ye shall eat the blood of no manner of flesh: for the life of all flesh is the blood thereof: whosoever eateth it shall be cut off.
See where we're told the "life of all flesh is the blood"? Well, of course. We know that don't we? That was written about 1400 BC. As a point of interest, I'm told a fellow by the name William Harvey discovered blood circulation as the key factor in physical life sometime in the early to mid 17th century AD. So what you ask? Well some 3000 years after God told Moses "life is in the blood" this guy described completely the systematic circulation and properties of blood! Seems somebody should have checked with Moses. See, I told you. You got my wheels turning. OK, now that we know life is in the blood let's go backwards a couple of verses and read;
Leviticus 17:11 (KJV)
11 For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul.
Wow! I know, you're thinking "this is Levitical Law of Sacrifice and this old guy is nuts" right? Yeah, well I may have one foot in the grave and the other on a banana peel, but I ain't dead just yet so humor me a bit as I type about God's word. This is where it get's interesting in my archaic mind. Besides, you started this remember?
Now God is telling us life is in the blood and blood makes atonement for what, the soul! I'm getting a little tired now so let's make a quick mental trip back to the Garden of Eden then I'll go to bed. Adam and Eve ate of that forbidden fruit then what? Yep, they fetched up a bunch of leaves, covered their nakedness and hid from God. So they thought. I find it a little interesting that in his discourse with God, Adam wanted to place the blame on God, remember? I have this mental vision of Adam shaking his finger at God and saying "Hey, it was that woman YOU gave me". Course that's not exactly what took place. But then the most amazing thing happened. God shed the BLOOD of living animals. Why? Of course He still wanted to PROVIDE Adam and Eve's physical bodies of FLESH with those skins but what did we read in Lev 17:11? Yep, you got it! for it is the blood that maketh an atonement for the soul.
Now my brother, we have a condensed beginning of a thin red trail leading from Eden to Moses and the Law to Calvary and life! Praise God! Ain't it a beautiful thing? And on this truth I can rest now. Goodnight.