Matthew 17:14-18

They came to where a large crowd had gathered to wait for Jesus. A man came and knelt before him and said, “Lord, please show your tender mercy toward my son. He has a demon who afflicts him. He has epilepsy, and he suffers horribly from seizures. He often falls into the cooking fire or into the river. I brought him to your followers, but they weren’t able to heal him.” Jesus replied, “Where is your faith? Can’t you see how wayward and wrong this generation is? How much longer do I stay with you and put up with your doubts? Bring your son to me.” Then Jesus rebuked the demon and it came out of him and the boy was instantly healed!