YES they can and they do, no exceptions. In MATT 10:1 and MARK 16:17 Jesus clearly instructs about “unclean spirits” Also in LUKE 9:1-2 the 12 apostles were instructed what to do in their ministry. Don W. Basham writes that “Christians have problems: profound desperate problems which often seem to defy solution. Every sincere Christian struggles faithfully against Satan’s attempt to overpower the believer. Prayer goes unanswered, the old self refuses to stay dead, temper and anger remain, shameful appetites continue, fears and anxieties continue”. Most believers just seem to learn to live with these situations and never get the real freedom Jesus wants to give them. Somehow evil spirits literally invade the personality of the person and exercise some dominion and control from within the person and feed those fears which defy the sincere prayers of believers.
Many simply believe that if they ignore Satan he will simply go away…not true. We are to oppose him and he will flee from us but never are we to take a cavalier attitude towards Satan. 1 PET 5:8-9, JAMES 4:7 and 2 Cor 1:9,11 verify this warning to us.
Out of ignorance and instilled fear some don’t believe in demons and the ministry of deliverance, which Jesus commissioned. Fear of any kind comes directly from Satan, remember that. Stephen Bell of KEY Ministries states that a person, realizing and admitting that they have personal demonization, is very humbled and under some degree of trauma, thus it is difficult for someone in place of authority or reputation to submit to deliverance ministry. Pride and shame enter the scene. Remember that Satan and his demons are total deceivers, and by their cunning have convinced most of the Body of Christ that a Christian cannot have a demon or be demonized. And the deception continues through sermons, books and personal teachings. The Bible teaches no such thing that a sheep of the house of Israel cannot have a demon.
You cannot crucify a demon or put to death a demon … scripture says you can only get rid of it by “casting it out in Jesus’ name”.
The true Christian is “owned by Jesus Christ”. But never say that one who is a Christian does not have a life free of all demonic bondage. A sincere Christian can be tormented or afflicted by a demon(s) in some area of their life and yet praise and worship God fully. Also remember that a sincere Christian can also be tormented by some physical illness ( which is generally from Satan ). People from whom Jesus expelled demons were not raving maniacs, mostly they were ordinary, God-fearing folks living ordinary lives in most ways. But they suffered in some specific area of their life with a physical infirmity or had to deal with some uncontrollable or unhealthy appetite based in an evil spirit. Christians today, who are normal, successful, healthy and faithful to God are beset by some haunting fear(s) or compulsive appetites ( lust, greed, etc) being caused by the presence of some evil spirit. When they submit to deliverance they are set free.
So what does the average Christian do with these torments? They turn to drugs, therapies, medical treatments, continual prayers at the altar and other remedies. Derek Prince once asked a lady during a deliverance service if she wanted her dignity kept intact or to be set free. It really is that simple.
Can a Christian have a demon? YES they can and they do. And getting rid of demons is a life-changing, life-long walk with Jesus.