Greetings:
As I understand it, although I may have been looking out the window during this part of the lecture, human bodies will eventually grow old and fail us, having us die, even if we were without the stain of original sin. However, without original sin, it stands to reason that such human bodies will last much longer. Still, upon death the soul will separate and migrate to heaven.
Thanks in advance for any guidance on this.
No, they would not have died. In the state of Original Justice, Adam an Eve possessed one supernatural gift and several preturnatural gifts.
The supernatural gift was
grace, which is a participation in the life of God. This is what is required to enter heaven.
One of the preturnatural gifts was
bodily immortality. This gift prevented the soul from separating from the body. The body itself originally aged much slower that it does today. In addition, the tree of life would have preserved the integrity of the body from any deterioration.
Another interesting gift that both Adam and Eve possessed was integrity. This gift kept their lower nature (their passions, emotions, etc.) perfectly subordinate to their reason. If it was reasonable for Adam to get angry, for example, he would have been exactly as angry as it was reasonable to be, and for only as long as was reasonable. All of the passions would have been at the service of reason with no rebellion whatsoever. When man disobeyed and rose of against God, God removed this gift which resulted in man’s lower nature (his passions and emotions) rising up against his higher nature (his reason). This was a just punishment for the crime.
Another gift that Adam alone possessed was infused knowledge, by which he knew, without having to learn, all that pertained to God’s law, the natural sciences, and anything else pertaining to this life.
All of these gifts were lost when Adam sinned.