Matthew 17:12-16

but I say to you that Elijah already came, and they did not recognize him, but did to him whatever they wanted. So also the Son of Man is going to suffer at their hands.”

Then the disciples understood that He had spoken to them about John the Baptist. The Demon-possessed Boy

When they came to the crowd, a man came up to Jesus, falling on his knees before Him and saying,

“Lord, have mercy on my son, because he has seizures and suffers terribly; for he often falls into the fire and often into the water.

And I brought him to Your disciples, and they could not cure him.”