Can a saved Christian have a demon Dr Peter Ruckman deliverance doctrine

DIY Exorcism: Dr. Peter S. Ruckman's Nightly Routine for Casting Out Demons

This is all from the Lord's bloodhound, Don Nesbitt's channel. Thank you to Brother Don Nesbitt. Dr. Peter S. Ruckman: So you have to be careful in dealing with stuff like that. Now, the fellows who profess to be exorcists and cast out unclean spirits all have a pattern. And...