12 Jesus replied, “To be sure, Elijah does come first, and restores all things. Why then is it written that the Son of Man must suffer much and be rejected?
13 But I tell you, Elijah has come, and they have done to him everything they wished, just as it is written about him.”

Jesus Heals a Boy Possessed by an Impure Spirit

14 When they came to the other disciples, they saw a large crowd around them and the teachers of the law arguing with them.
15 As soon as all the people saw Jesus, they were overwhelmed with wonder and ran to greet him.
16 “What are you arguing with them about?” he asked.
17 A man in the crowd answered, “Teacher, I brought you my son, who is possessed by a spirit that has robbed him of speech.
18 Whenever it seizes him, it throws him to the ground. He foams at the mouth, gnashes his teeth and becomes rigid. I asked your disciples to drive out the spirit, but they could not.”
19 “You unbelieving generation,” Jesus replied, “how long shall I stay with you? How long shall I put up with you? Bring the boy to me.”
20 So they brought him. When the spirit saw Jesus, it immediately threw the boy into a convulsion. He fell to the ground and rolled around, foaming at the mouth.
21 Jesus asked the boy’s father, “How long has he been like this?”“From childhood,” he answered.
22 “It has often thrown him into fire or water to kill him. But if you can do anything, take pity on us and help us.”