And on coming to his disciples, he saw a great crowd around them, and the Scribes arguing with them. And immediately all the crowd, on seeing him, were amazed and struck with fear, and running up, began to greet him. And he asked them, "What are you arguing about among yourselves?"
And one of the crowd answering, said, "Master, I have brought to thee my son, who has a dumb spirit; and wherever it seizes him it throws him down, and he foams and grinds his teeth; and he is wasting away. And I told thy disciples to cast it out, but they could not."
And he answered and said to them, "O unbelieving generation, how long shall I be with you? How long shall I put up with you? Bring him to me." And they brought him to him; and the spirit, when it saw Jesus, immediately threw the boy into convulsions, and he fell down on the ground, and rolled about foaming at the mouth.
So he asked his father, "How long is it since this has come upon him?" And he said, "From his infancy. Oftentimes it has thrown him into the fire and into the waters to destroy him. But if thou canst do anything, have compassion on us and help us." But Jesus said to him, "If thou canst believe, all things are possible to him who believes." At once the father of the boy cried out, and said with tears, "I do believe; help my unbelief."
Now when Jesus saw that a crowd was rapidly gathering, he rebuked the unclean spirit, saying to it, "Thou deaf and dumb spirit, I command thee, go out of him and enter him no more." And crying out and violently convulsing him, it went out of him, and he became like one dead, so that many said, "He is dead."
But Jesus took him up by the hand, and raised him and he stood up.
And when he had come into the house, his disciples asked him privately, "Why could not we cast it out?" And he said to them, "This kind can be cast out in no way except by prayer and fasting."