37 It happened on the next day, when they had come down from the mountain, that a great multitude met him. 38 Behold, a man from the crowd called out, saying, “Teacher, I beg you to look at my son, for he is my only child. 39 Behold, a spirit takes him, he suddenly cries out, and it convulses him so that he foams, and it hardly departs from him, bruising him severely. 40 I begged your disciples to cast it out, and they couldn’t.” 41 Jesus answered, “Faithless and perverse generation, how long shall I be with you and bear with you? Bring your son here.” 42 While he was still coming, the demon threw him down and convulsed him violently. But Jesus rebuked the unclean spirit, and healed the boy, and gave him back to his father.
Matthew Henry's Commentary on Luke 9:37-42
Commentary on Luke 9:37-42
(Read Luke 9:37-42)
How deplorable the case of this child! He was under the power of an evil spirit. Disease of that nature are more frightful than such as arise merely from natural causes. What mischief Satan does where he gets possession! But happy those that have access to Christ! He can do that for us which his disciples cannot. A word from Christ healed the child; and when our children recover from sickness, it is comfortable to receive them as healed by the hand of Christ.