Ego and the belief in the physical body
One of the reasons that physical healing miracles are held in such high esteem above other emotional healing, for example, is that it requires you to detach from the ego identification of the body.
What this means in practical terms, is experiences like: understanding that you have no physical body, and that the physical body, like everything in reality, is just accumulated layers of thought in agreement that the body exists.
Being in the body while denying that it exists creates an interesting kind of cognitive dissonance, I'm not going to lie. It's not an easy balance to maintain.