ACV(i)
16 And I brought him to thy disciples, and they could not heal him.
17 And having answered, Jesus said, O faithless and perverted generation, how long will I be with you? How long will I endure you? Bring him here to me.
18 And Jesus rebuked it, and the demon departed from him. And the boy was cured from that hour.
19 Then the disciples having come to Jesus in private, said, Why could we not cast it out?
20 And Jesus said to them, Because of your unbelief. For truly I say to you, if ye have faith as a grain of a mustard plant, ye will say to this mountain, Remove from here to there, and it will depart, and nothing will be impossible to you.
21 But this kind does not go out except by prayer and fasting.