Mark 9:17-22

17And one out of the crowd answered him, Teacher, I brought to thee my son, who has a dumb spirit;

18and wheresoever it seizes him it tears him, and he foams and gnashes his teeth, and he is withering away. And I spoke to thy disciples, that they might cast him out, and they could not.

19But he answering them says, O unbelieving generation! how long shall I be with you? how long shall I bear with you? bring him to me.

20And they brought him to him. And seeing him the spirit immediately tore him; and falling upon the earth he rolled foaming.

21And he asked his father, How long a time is it that it has been like this with him? And he said, From childhood;

22and often it has cast him both into fire and into waters that it might destroy him: but if thou couldst [do] anything, be moved with pity on us, and help us.