Luke 9:37-42

37 The next day, when they had come down from the mountain, a large crowd met Jesus.

38 A man in the crowd shouted, "Teacher, I beg you to look at my son. He's my only child.

39 Whenever a spirit takes control of him, he shrieks, goes into convulsions, and foams at the mouth. After a struggle, the spirit goes away, leaving the child worn out.

40 I begged your disciples to force the spirit out of him, but they couldn't do it."

41 Jesus answered, "You unbelieving and corrupt generation! How long must I be with you and put up with you? Bring your son here!"

42 While he was coming [to Jesus], the demon knocked the boy to the ground and threw him into convulsions. Jesus ordered the evil spirit to leave. He cured the boy and gave him back to his father.