“But light cannot dwell with darkness!”
This is the single most common reasoning that is given to somebody who asks if a Christian can have a demon. While it sounds reasonable, they are avoiding the fact that sin and bondage can exist in the life of a believer… which is darkness in itself!
How can a person who is born of incorruptible seed (see 1 Peter 1:23), washed with the Blood of Christ (see Revelations 1:5), justified (see Romans 3:24) and given the righteousness of God (see Romans 3:22)… still be in bondage to sin or continue to commit it? Even Paul realized that there was indeed evil present in Him (see Romans 7:21)! How can this be? When you are born again, your soul (mind, will and emotions) and physical body are NOT born again. God’s Word tells us that we are to be transformed by the renewing of our minds (see Romans 12:2) and that through the washing of the Word (see Ephesians 5:26), He will prepare the bride (that’s us) to be without spot nor wrinkle nor any other blemish for Jesus’ return… apparently Christ’s bride can have blemishes before His return!
In answer to the question, “Can a Christian have areas of their life in bondage and darkness?” the answer is clearly YES. This is due to the fact that we consist of a spirit (the real us), a soul (our mind, will and emotions) and a body (physical ’shell’). While demons cannot own us or be united with our spirits, they can indeed dwell within our souls and bodies. I have more on this topic in my free e-book, “A biblical approach to the ministry of deliverance.”