Matthew 17:14-17

14And when they came to the crowd, a man came to him, falling on his knees before him, and saying,

15Lord, have mercy on my son, for he is lunatic, and suffers sorely; for often he falls into the fire and often into the water.

16And I brought him to thy disciples, and they were not able to heal him.

17And Jesus answering said, O unbelieving and perverted generation, how long shall I be with you? how long shall I bear with you? Bring him here to me.