Matthew 17:11-21

11 [And] He answered, and said to them, [Forsooth] Elias shall come, and he shall restore all things.

12 And I say to you, that Elias is now come, and they knew him not, but they did in him whatever things they would; and so man's Son shall suffer of them.

13 Then the disciples understood, that he said to them of John the Baptist.

14 And when he came to the people [And when he came to the company], a man came to him, and felled [fell] down on his knees before him, and said [saying],

15 Lord, have mercy on my son; for he is lunatic, and suffereth evil, for oft times he falleth into the fire, and oft times into the water.

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

17 Jesus answered, and said, A! thou generation unbelieveful [unbelieveful, or out of the faith,] and wayward; how long shall I be with you? how long shall I suffer you? Bring ye him hither to me.

18 And Jesus blamed him, and the devil went out from him; and the child was healed from that hour.

19 Then the disciples came to Jesus privily, and said to him, Why might not we cast him out?

20 Jesus saith to them [Jesus said to them], For your unbelief. Truly I say to you, if ye have faith, as a corn of mustard seed, ye shall say to this hill, Pass thou hence [Pass thou from hence], and it shall pass; and nothing shall be impossible to you;

21 but this kind is not cast out, but by prayer and fasting.