As you look at someone's body, you think this is them. It's not. Look more closely. Notice how the body itself is a kind of externalized appearance of solidity, which blinds you. The person is "inside" the body behind the physical appearance. Look at how their spirit or mind is within the body, and the body covers it up. You cannot seemingly SEE the spirit.
Think also about how you yourself, in your own body, have a difference experience on the "inside" of your body than other people seem to "see" in the outside. And when you look in the mirror there is a disconnect between how the body looks and your sense of identity - particularly if you are not heavily identified with your body. Who you are on the inside can be quite different to how you appear physically.
So then recognize this is true of others as well. Who they are is not the body that you see at first glance. It's far too easy to be blinded by sight of form and to fixate on the physical body of a person thinking that IS the person. The physical body of another was MADE TO BLOCK SIGHT. To prevent you from seeing your brother BEHIND the body's form. Bodies are separation devices, designed to imprison souls in order to identify them as locked up inside images of differences and illusions.
If you can particularly regard someone's "inner self" or "the person" distinct from the body, it is quite interesting what happens to your perception. Not identifying THEIR body "as them", but rather looking past it to the person "behind" or "within" it, and see that inner person, you overlook the body. And suddenly it becomes quite funny how everything you thought was true about the person was actually a statement about the state of their BODY.
So if their body seems to be sick or has problems and you have regarded these things as "part of the person", you have been deceived. When you look past the illusory appearances of physicality, and try to look at the inner person, you may transcend the body and suddenly realize that all of the body's states and characteristics are NOT the person.
Therefore the body is NOT a representative of the person directly, but rather a once-removed picture of their inner condition. Seeing the inner condition allows you to recognize this, and then it becomes quite hilarious, especially if you had bought into their physical differences or disabilities previously. It also shows you the body then in its proper perspective, that it isn' the person but merely an outward picture, and therefore its state or condition DOES NOT MATTER ie has no truth to it, therefore you can easily NOT BELIEVE IN IT and work miracles to heal the person, disregarding the body's appearance as meaning anything at all.