[imardmd1]

But BELIEF is definitely 'in that passage.'

So what? Did Jesus increase the belief of the boy's father so that he, and not Jesus, could heal the boy's sickness by exorcising the devilish spirit possesing him?

[Elsie]

Did Jesus increase the belief of the boy's father so that he, and not Jesus, could heal the boy's sickness by exorcising the devilish spirit possesing him?

MAybe...

Matthew 13:58
And he did not many mighty works there because of their unbelief.

Mark 6:5
He could not do any miracles there, except lay his hands on a few sick people and heal them.