Someone from the crowd answered him, “Teacher, I have brought to you my son possessed by a mute spirit. Wherever it seizes him, it throws him down; he foams at the mouth, grinds his teeth, and becomes rigid. I asked your disciples to drive it out, but they were unable to do so.” He said to them in reply, “O faithless generation, how long will I be with you? How long will I endure you? Bring him to me.” They brought the boy to him. And when he saw him, the spirit immediately threw the boy...