WPNT(i)
17 In answer a man in the crowd said: “Teacher, I brought you my son, who has a mute spirit.
18 And wherever it seizes him it throws him down, and he foams at the mouth and gnashes his teeth, and becomes rigid. Indeed, I spoke to your disciples, that they might cast it out, but they could not.”
19 But He answered him by saying: “O unbelieving generation, how long shall I be with you, how long shall I put up with you? Bring him to me!”
20 So they brought him to Him. Upon seeing Him the spirit convulsed him, and falling to the ground he started wallowing, foaming at the mouth.
21 Then He asked his father, “How long has this been happening to him?” And he said: “From childhood.
22 Really, it has often thrown him both into fire and into water to destroy him. But if you can do anything, have compassion on us and help us.”