Jesus had the same flesh as all of us. If that flesh is called “nature” and that nature is sinful, then Jesus shared it.
He was not made immortal because in Adam all die. When death was pronounced upon Adam and all of his posterity, Jesus was included.
But Jesus never sinned himself. And that’s why God accepted his sacrifice.
How does sinful flesh not sin? It is sinful to have sinful flesh. It is sinful to say that God created man with sinful flesh.
If you have been reading the posts I have posted to you, you would surely have noticed that I never said Adam was created immortal. He was created mortal. Mortal does not mean sinful. It means subject to death----able to die. He had access in Eden to the tree of life. As long as he had access to that tree and ate of it, he would not die.
If he ate of the forbidden tree that would give him the knowledge of good
and evil (a tree he was commanded to not eat of)
then he would die, if he did not also have access to the tree of life. Which is why he was barred from the Garden. The reason Jesus died is because he had the mortal (able to die, not sinful. Don't use them as synonyms.) flesh and blood, and he gave his mortal body as a substitute for those born in Adam. That same flesh and blood body was raised to life immortal. The first fruits of those who would also be raised from the dead, immortal.
Now answer me this. If Adam and Eve gained something from eating of the forbidden tree, that they did not have before (the
knowledge of evil as well as good) does he and all of mankind after him, now have this knowledge of what is not good, and therefore the desires for it residing in that flesh and blood? And if that is so, has the very nature of a human being changed? If you still insist the answer is no, then I would expect that to be explained with something other than what has already been stated. IOW you would need to support your claim with scripture accompanied by exposition of those scriptures. Ideally you would then find if it contradicts anything else on the subject in scripture, and if it does, find a way to explain away the contradiction.
You do not have to do this of course. I am not demanding it of you. I am saying that if you can't do that, there is no basis for a discussion.
P.S. If nothing changed about the very nature of mankind because of the fall, why would it be necessary to ban them from the tree of life? And take note too, that there were no humans left in the garden so none had access to the tree of life.