Mark 9:19-29

19 Jesus answered him and said, "O faithless generation, how long shall I be with you? How long shall I suffer you? Bring him unto Me."

20 And they brought the boy unto Him. And when the spirit saw Him, straightway he tore the boy; and he fell on the ground and wallowed about foaming.

21 And He asked his father, "How long is it ago since this came unto him?" And he said, "From childhood.

22 And oftentimes it hath cast him into the fire and into the waters to destroy him; but if thou canst do any thing, have compassion on us and help us."

23 Jesus said unto him, "If thou canst believe, all things are possible to him that believeth."

24 And straightway the father of the child cried out and said with tears, "Lord, I believe; help Thou mine unbelief!"

25 When Jesus saw that the people came running together, He rebuked the foul spirit, saying unto him, "Thou dumb and deaf spirit, I charge thee, come out of him and enter no more into him."

26 And the spirit cried, and rent the boy sorely and came out of him; and he was as one dead, insomuch that many said, "He is dead."

27 But Jesus took him by the hand and lifted him up, and he arose.

28 And when He had come into the house, His disciples asked Him privately, "Why could not we cast him out?"

29 And He said unto them, "This kind can come forth by nothing but by prayer and fasting."