Mark 9:18-20

18And whenever it seizes him, it throws him down, and he foams and grinds his teeth and becomes rigid. So I asked your disciples to cast it out, and athey were not able.” 19And he answered them, O bfaithless generation, chow long am I to be with you? How long am I to bear with you? Bring him to me.” 20And they brought the boy to him. And when the spirit saw him, immediately it dconvulsed the boy, and he fell on the ground and rolled about, foaming at the mouth.
Copyright information for ESV