Mark 9:17-18, 19-20

A man out of the crowd answered, “Teacher, I brought my mute son, made speechless by a demon, to you. Whenever it seizes him, it throws him to the ground. He foams at the mouth, grinds his teeth, and goes stiff as a board. I told your disciples, hoping they could deliver him, but they couldn’t.”

Jesus said, “What a generation! No sense of God! How many times do I have to go over these things? How much longer do I have to put up with this? Bring the boy here.” They brought him. When the demon saw Jesus, it threw the boy into a seizure, causing him to writhe on the ground and foam at the mouth.