Matthew 12:43-45

In Matthew 12:43-45 Christ describes a person who has a demon leave him.  The demon leaves the person and goes through the wilderness before returning to the man where he finds everything cleaned but empty.  He then takes seven demons worse than himself and inhabits the man again.  Such is the state of the man who reforms his life without the power of Christ. Eventually he finds himself in a worse position than where he started.