Matthew 17:9-21

9As they were coming down the mountain, Jesus instructed them, “Don’t tell anyone what you have seen, until the Son of Man has been raised from the dead.”

10The disciples asked him, “Why then do the teachers of the law say that Elijah must come first?” 11Jesus replied, “To be sure, Elijah comes and will restore all things. 12But I tell you, Elijah has already come, and they did not recognize him, but have done to him everything they wished. In the same way the Son of Man is going to suffer at their hands.”

13Then the disciples understood that he was talking to them about John the Baptist.

Jesus Heals a Demon-Possessed Boy 14When they came to the crowd, a man approached Jesus and knelt before him. 15“Lord, have mercy on my son,” he said. “He has seizures and is suffering greatly. He often falls into the fire or into the water.

16I brought him to your disciples, but they could not heal him.” 17“You unbelieving and perverse generation,” Jesus replied, “how long shall I stay with you? How long shall I put up with you? Bring the boy here to me.”

18Jesus rebuked the demon, and it came out of the boy, and he was healed at that moment.

19Then the disciples came to Jesus in private and asked, “Why couldn’t we drive it out?” 20He replied, “Because you have so little faith. Truly I tell you, if you have faith as small as a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.”

21Some manuscripts include here words similar to Mark 9:29.