In a beautiful garden in Eden, where there were many fruit trees. They were sentenced to die, and they were driven out of the beautiful garden, to get their living by labour. Yes, because we are their children. We have come from them. It was a sentence that cursed their bodies, and we have the same bodies.
Man is mortal because of sin.
It is the life-power of God, without which we could not be living beings. It is not we, but the power by which we are. It is the resurrection we have to look to. The raising to life again of people that have died. The unjust will rise as well as the just.