Not sure where I read it but I recall someone addressing this quality...

The reasoning was that as the enlightened individual that christ was meant he possessed the ability to see sickness/disease for what they truly are,

specific perspectives, thought patterns, and behaviors.

The ability to recognize this meant the ability to see through it and too pass along new perspectives new thoughts new behaviors

The reason it was not to be spoken of was to avoid falling back into the old mindset and thus the return of disease

Onward and upward