"Faith Healing" joke

A faith healer ran into his old friend, Max and asked him how things were going.

"Not so good, was the pained reply. "My brother is very sick."

"Your brother isn't sick," contradicted the faith healer, "he only thinks he's sick. Remember that, he only thinks he's sick."

Two months later they met again and the faith healer asked Max:

"How's your brother now?"

"Worse, groaned Max, "he thinks he's dead."