First of all, you have to understand that these Homo sapiens bodies are not the children of God. The sleeping immortals, within (true selves, souls, Holy Ghosts), are God's children -- created in His image and likeness.
These bodies are only a tool created to assist in the rescue attempt.
But some children of God are so attached to their egos and bodies that they do not want to return (wake up).
Christ's sacrifice was a symbol for what we all must do -- let the ego self die, and let the true self, within, awaken. Only with spiritual consciousness will continuity of consciousness prevail after bodily death. This is how everlasting life works. It's not about keeping your Homo sapiens body. You've had many of them. Alas! Even most Christians reject this idea, though Jesus talked about it -- that Elijah had come back and no one recognized him.