Conjecture. Neither you nor I know that.
Of course we do. Adam was not created eternal. Eternalness is God. It is his Nature. It is His glory. And He gives His glory to no one. If Adam was eternal at creation he would by necessity MUST possess ALL Deific Attributes of God or he would fall short of the glory of God. Knowing this alone proves that Adam was created fallen short of the glory of God. The Greek word is "harmatia" and it means "missing the mark" [of the glory of God.] This word is translated "sin" or "sinful," in the KJV, exactly my position that Adam was created sinful. And this is why he sinned. There is also the fact that he and the woman were barred from the Tree of Life by which their eating it they would live forever. And I know the textbook answer forthcoming...they were barred so that they would not live forever in their sinful condition. But I digress. Adam was not created eternal for again by necessity he MUST possess ALL Deific Attributes of God or he would fall short of the glory of God. There is ONLY ONE PERSON who can stand before a Holy and Righteous God and that Person is the Holy Son.
More conjecture. You have no way of knowing that and neither do I. It did not happen and because of the fall could not be confirmed. The tree of life, at the very least, would have extended his life indefinitely had he not sinned. But that is an assumption in itself. Since the Fall was planned by God it's all moot.
As above.
Adam and Eve should have died that day. But God's plan required they live on in their sin so a sacrifice was made ( the skins God covered them with were the first "deaths" recorded. ). The common interpretation was that they died a spiritual death but I'm not sure if that really squares with the narrative. A substitution was made for their sin. They taught their children of this ( righteous Able ). At this point the curse was in full effect so "sinning" was a given and therefore death as well. After the curse. Blocking Adam and Eve off from the Garden and the tree of life was a mercy.
That it took them ~900 years to die even under the curse is pretty amazing.
Adam and the woman DID die "in the day [they ate of the Tree as God promised. I believe they were created trichotomous: body, soul, and human spirit. This is the image of God. He didn't die soul-fully for the soul is comprised of the intellect, the conscience, the emotions, the senses, the mind, and the will and he was able to communicate and use all these faculties. They didn't die physically for they lived a total of 930 years and had many offspring in that time. Many offspring. What's left is their human spirit. This is what died "in the day" they ate the forbidden fruit. From that day forward ALL males and females are born dichotomous: body and soul. no human spirit.
Now let's take a look at what Jesus said:
28
And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.
Mt 10:28.
Jesus is saying a two-fold person [body and soul] are cast into "hell." I believe that there are no three-fold persons [saved] in "hell."
When a person is born again God creates a new human spirit for that person and they are restored to a trichotomy: body, soul, human spirit. The image of God. One of the functions of a human spirit is that it allows us to process spiritual phenomenon and the source of it. Much as the gift of discerning of spirits does.
Paul's words confirm this:
23 And the very God of peace sanctify you wholly; and I pray God your whole
spirit and
soul and
body be preserved blameless unto the coming of our Lord Jesus Christ. 1 Th 5:23.
Paul again says:
24 And that ye put on the
new man, which after God is
created in righteousness and true holiness. Eph 4:24.
and
17 Therefore if any man be in Christ, he is a
new creature: old things are passed away; behold, all things are become new. 2 Cor. 5:17.
So, in reality Adam and the woman died "in the day" they ate of the Tree. That very day. For without a human spirit God's way of communicating with the man changed after they sinned.
They were not created eternal. They were created sinful. That's the only way God can create them "in the beginning."
They sinned because they were created sinners. They are not sinners because they sinned.
13 As saith the proverb of the ancients, Wickedness proceedeth from the wicked: 1 Sam 24:13.
I wonder how ancient this proverb is. Maybe all the way to the Garden of Eden and Adam and the woman?