Matthew 17:15

¹³  Then the disciples understood that he spake unto them of John the Baptist.

¹⁴  And when they were come to the multitude, there came to him a certain man, kneeling down to him, and saying,

¹⁵  Lord, have mercy on my son: for he is lunatick, and sore vexed: for ofttimes he falleth into the fire, and oft into the water.

¹⁶  And I brought him to thy disciples, and they could not cure him.

¹⁷  Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? how long shall I suffer you? bring him hither to me.