If Jesus could forgive sins while He was here on earth, and if all it took was removal of the demon’s legal grounds in order to send them to flight, then why did Jesus go about casting out demons? The Bible is clear that He had power here on earth to remove the demon’s legal grounds through the forgiveness of sins:
Matthew 9:2-6, “And, behold, they brought to him a man sick of the palsy, lying on a bed: and Jesus seeing their faith said unto the sick of the palsy; Son, be of good cheer; thy sins be forgiven thee. And, behold, certain of the scribes said within themselves, This man blasphemeth. And Jesus knowing their thoughts said, Wherefore think ye evil in your hearts? For whether is easier, to say, Thy sins be forgiven thee; or to say, Arise, and walk? But that ye may know that the Son of man hath power on earth to forgive sins, (then saith he to the sick of the palsy,) Arise, take up thy bed, and go unto thine house.”
If all you had to do was get a person saved and their demons went away automatically, then what is the point in casting out demons at all? After all, are we trying to bypass salvation and just apply a patch to that person’s problem or bondage? What is the point of going through a messy deliverance session where you have to confront demons face to face and drive them out, when all you have to do is get the person saved, and all the demons go without a whim?
The truth is that this belief that Christians cannot have demons, completely undermines the whole point of casting out demons. The reason the church today does not practice deliverance is because they don’t really see the purpose of it… they think it all happens automatically, and that’s why most pastors have never cast out a demon in their life!
Persecution Live 