Mark 9:12-21

12And he answered and told them, Elijah verily cometh first, and restoreth all things; and how it is written of the Son of man, that he must suffer many things, and be set at nought. 13But I say unto you, That Elijah is indeed come, and they have done unto him whatsoever they listed, as it is written of him.

14And when he came to his disciples, he saw a great multitude about them, and the scribes questioning with them. 15And straightway all the people, when they beheld him, were greatly amazed, and running to him saluted him. 16And he asked the scribes, What question ye with them? 17And one of the multitude answered and said, Master, I have brought unto thee my son, which hath a dumb spirit; 18And wheresoever he taketh him, he teareth him: and he foameth, and gnasheth with his teeth, and pineth away: and I spake to thy disciples that they should cast him out; and they could not. 19He answereth him, and saith, O faithless generation, how long shall I be with you? how long shall I suffer you? bring him unto me. 20And they brought him unto him: and when he saw him, straightway the spirit tare him; and he fell on the ground, and wallowed foaming. 21And he asked his father, How long is it ago since this came unto him? And he said, Of a child.