Matthew 17:14-18

When they came to the crowd, a man came up to Jesus, falling on his knees before Him and saying, “Lord, have mercy on my son, for he is a lunatic and is very ill; for he often falls into the fire and often into the water. I brought him to Your disciples, and they could not cure him.” And Jesus answered and said, “You unbelieving and perverted generation, how long shall I be with you? How long shall I put up with you? Bring him here to Me.” And Jesus rebuked him, and the demon came out of him, and the boy was cured at once.