Author Don Schwager, Servants of the Word - Mark 9:14-29 - And when they came to the disciples, they saw a great crowd about them, and scribes arguing with them. And immediately all the crowd, when they saw him, were greatly amazed, and ran up to him and greeted him. And he asked them, "What are you discussing with them?" And one of the crowd answered him, "Teacher, I brought my son to you, for he has a dumb spirit; and wherever it seizes him, it dashes him down; and he foams and grinds his teeth and becomes rigid; and I asked your disciples to cast it out, and they were not able."