Mark 9:16-18

Revised Standard Version

¹⁶ And he asked them, “What are you discussing with them?” ¹⁷ And one of the crowd answered him, “Teacher, I brought my son to you, for he has a dumb spirit; ¹⁸ 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.”