Luke 9:38-42:
And, behold, a man of the company cried out, saying, Master, I beseech thee, look upon my son: for he is mine only child.
And lo, a spirit taketh him, and he suddenly crieth out; and it teareth him that he foameth again, and bruising him hardly departeth from him.
And I besought thy disciples to cast him out; and they could not.
And Jesus answering said, O faithless and perverse generation, how long shall I be with you, and suffer you? Bring thy son hither.
And as he was yet a coming, the devil threw him down, and tare him. And Jesus rebuked the unclean spirit, and healed the child, and delivered him again to his father.
Notes on Luke 9:38-42:
Luke gives the shortest version of this incident; Matthew and Mark go into more detail.
See also:
According to YOUR FAITH Be It Done unto You!