You know how in Ella Enchanted, Ella just has to say "You will know longer be obedient" and she is no longer obedient?
Well wouldn't be awesome if all we had to do was say "You will no longer be sinful" and we are no longer sinful. But that doesn't happen just by saying that. It would take a lot of work to reach that if we could. Sadly we are born sinful so it is impossible until we are internally in heaven with God.