17. Jesus answered, “Faithless and perverse generation! How long will I be with you? How long will I bear with you? Bring him here to me.”
18. Jesus rebuked him, the demon went out of him, and the boy was cured from that hour.
19. Then the disciples came to Jesus privately, and said, “Why weren’t we able to cast it out?”
20. He said to them, “Because of your unbelief. For most certainly I tell you, if you have faith as a grain of mustard seed, you will tell this mountain, ‘Move from here to there,’ and it will move; and nothing will be impossible for you.
21. But this kind doesn’t go out except by prayer and fasting.”
22. While they were staying in Galilee, Jesus said to them, “The Son of Man is about to be delivered up into the hands of men,
23. and they will kill him, and the third day he will be raised up.” They were exceedingly sorry.