“And wheresoever he taketh him, he teareth him: and he foameth, and gnasheth with his teeth, and pineth away: and I spake to thy disciples that they should cast him out; and they could not.”
King James Version (KJV)
Mr 9:18 He foameth. and gnasheth with his teeth, and pineth away. According to the Revised Version, Matthew (Mt 17:15) says that the youth was an epileptic, and the symptoms given by Mark are those of epilepsy. Mark also states that he had been afflicted from childhood (Mr 9:21).