There's a radical teaching in the course that the human body should be in a state of perfect health in order to demonstrate a healed mind and symbolize eternal life. This means that if the body is in any way sick or dead it is conveying a message, through example, of attack and accusation. Obviously if a persons mind is healed but their body is not, this would be a conflicted state where the person really lacks conviction in what they claim to believe, because they have not succeeded in healing the body.
If it's true that health and wholeness are real to a person, then the body must portray this physically also, otherwise no-one is going to believe them. As Jesus says, no-one can learn through double messages, so we can't have the mind being healed while the body is sick otherwise we're trying to communicate two different teachings at once. On the one hand our mind says "I believe in healing" while the body is screaming "but here's the proof that I don't".
This isn't a teaching that many see, recognize, or accept.
"Sick bodies are accusers"
"A broken body is proof the mind has not been healed."
"The body can become a sign of life, a promise of redemption, and a breath of immortality to those grown sick of breathing in the fetid scent of death. Let it have healing as its PURPOSE. Then will it send forth the message it received, and by its health and loveliness proclaim the truth and value that it represents. Let it receive the power to represent an endless life, forever unattacked. And to your brother let its message be, "Behold me, brother, at your hand I live."
"Your body can be means to teach that it has never suffered pain because of him. And in its healing can it offer him mute testimony to his innocence. It is THIS testimony that can speak with power greater than a thousand tongues. For here is his forgiveness PROVED to him. A miracle can offer nothing LESS to him than it has given unto you. So does your healing show your mind is healed, and has forgiven what he did NOT do. And so is HE convinced his innocence was never lost, and healed along with you."
"Now in the hands made gentle by His touch, the Holy Spirit lays a picture of a DIFFERENT you. It is a picture of a body still, for what you REALLY are can not be seen nor pictured. But THIS one has NOT been used for purpose of attack, and therefore never suffered pain at all. IT witnesses to the eternal truth that you can not BE hurt, and points BEYOND itself to both YOUR innocence and HIS.
Show THIS unto your brother, who will see that every scar is healed, and every tear is wiped away in laughter and in love. And he will look on his forgiveness there, and with healed eyes will look BEYOND it, to the innocence that he beholds in you. Here is the proof that he has NEVER sinned; that NOTHING that his madness bid him do was ever done, or ever had effects of any kind. That NO reproach he laid upon his heart was EVER justified, and NO attack can touch him with the poisoned sting of fear. Attest his innocence and NOT his guilt. YOUR healing is his comfort and HIS health. BECAUSE it proves illusions were not true."
"Health is the witness unto health. As long as it is unattested, it remains without conviction. Only when DEMONSTRATED has it BEEN proved, and MUST compel belief. No-one is healed through double messages. If you wish ONLY to be healed, you heal. Your single PURPOSE makes this possible."