Mark 9:20-30

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

21 And Jesus asked his father, How long ago is it since this came unto him? And he said, Of a child.

22 And ofttimes it has cast him into the fire and into the waters to kill him, but if thou canst do any thing, help us, having mercy on us.

23 And Jesus said unto him, If thou canst believe this, all things are possible to him that believes.

24 And straightway the father of the child crying out with tears, said, Lord, I believe; help thou my unbelief.

25 When Jesus saw that the multitude concurred, he rebuked the unclean spirit, saying unto him, Thou dumb and deaf spirit, I command thee, come out of him and enter no more into him.

26 Then the spirit, crying out and rending him sore, came out; and he remained as one dead, insomuch that many said that he was dead.

27 But Jesus, taking him by the hand, straightened him up; and he arose.

28 And when he was 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.

30 And having left there, they walked together through Galilee; and he did not wish that anyone should know of it.