So you don't believe the Bible, the infallible word of God which gives first hand accounts of Jesus casting out demons to be a reliable source, right?
I believe Jesus was basically who he claimed to be, the ressurection a true story. The new testament in my view would be easier to read if the stories about casting out demons hadn't been added to it.
Got a demon problem? Here's what I recommend:
That's the Marlin lever-action 45/70, basically America's most lethal gun. With 420 grain hardcast bullets it will drop rhinos and elephants and the demons will not stick around to find out if it'll drop them.