Demon possession is a condition in which a demon or demons have complete control over a person. Demon possession involves demons actually inhabiting a person and controlling his or her actions (see Mark 9:22). Christians cannot be demon possessed. The indwelling Holy Spirit will not allow it (Romans 8:9; Ephesians 5:18). Therefore, the devil and his demons cannot control a believer. They cannot make us do anything involuntarily. So, rather than blame the devil, we need to look at ourselves.