text: First of all, I believe a person is not possessed by the devil himself, but instead by demons he sends out.  Demons are all around waiting for their opportunity to pick on someone.  They can not read a persons mind, but they know a persons weaknesses.  That's why a person falls into the same sinful traps over and over again.  Once a person identifies the tactics the enemy they can overcome their weaknesses.  Of course, identifying your weaknesses is the most difficult part since you must die to your own selfish desires (which are really the idols in your life).  Repenting for your sins is also very important because God gave his only son Jesus Christ so we will be forgiven.  Sometimes a demon-possessed person is so possessed they can only be set free by a person that has been given a gift by God to drive out demons through the blood of Jesus Christ.  So yes, I do believe there is a God and there is the devil.