Mark 9:22-24 : A man's child has an unclean spirit (that is demon possessed), comes to Jesus' disciples, and they prove to be unable to cast this demon out. He tells Jesus everything that has happened with the boy and the Disciples. He says to Jesus, "But if you can do anything, have compassion on us and help us." (What's key to remember is that this is well advance into Jesus' Earthly Ministry Jesus has done a lot of healing, teaching casting out demons etc) Why I bring this up is Jesus' response. He says," If you (Jesus) can! All things are possible for the one who believes!"
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