37 The next day, when they came down from the mountain, a large crowd met him. 38 A man in the crowd called out, "Teacher, I beg you to look at my son, for he is my only child. 39 A spirit seizes him and he suddenly screams; it throws him into convulsions so that he foams at the mouth. It scarcely ever leaves him and is destroying him. 40 I begged your disciples to drive it out, but they could not." 41 "You unbelieving and perverse generation," Jesus replied, "how long shall I stay with you and put up with you? Bring your son here." 42 Even while the boy was coming, the demon threw him to the ground in a convulsion. But Jesus rebuked the impure spirit, healed the boy and gave him back to his father.