17 Who, wheresoever he taketh him, dasheth him, and he foameth, and gnasheth with the teeth, and pineth away; and I spoke to thy disciples to cast him out, and they could not.
18 Who answering them, said: O incredulous generation, how long shall I be with you? how long shall I suffer you? bring him unto me.
19 And they brought him. And when he had seen him, immediately the spirit troubled him; and being thrown down upon the ground, he rolled about foaming.
20 And he asked his father: How long time is it since this hath happened unto him? But he said: From his infancy:
21 And oftentimes hath he cast him into the fire and into waters to destroy him. But if thou canst do any thing, help us, having compassion on us.
22 And Jesus saith to him: If thou canst believe, all things are possible to him that believeth.
23 And immediately the father of the boy crying out, with tears said: I do believe, Lord: help my unbelief.