Mark 9:14-17

14When they came [back] to the [other nine] disciples, they saw a large crowd around them, and scribes questioning and arguing with them.

15Immediately, when the entire crowd saw Jesus, they were startled and began running up to greet Him.

16He asked them, “What are you discussing with them?”

17One of the crowd replied to Him, “Teacher, I brought You my son, possessed with a spirit which makes him unable to speak;