Can a Christian be possessed? We have a theological debate!

While the Bible does not explicitly state whether a Christian can be possessed by a demon, related biblical truths make it abundantly clear that Christians cannot be demon-possessed. There is a distinct difference between being possessed by a demon and being oppressed or influenced by a demon. Demon possession involves a demon having direct/complete control over the thoughts and/or actions of a person (Matthew 17:14-18; Luke 4:33-35; 8:27-33). Demon oppression or influence involves a demon or demons attacking a person spiritually and/or encouraging him/her into sinful behavior. Notice that in all the New Testament passages dealing with spiritual warfare, there are no instructions to cast a demon out of a believer (Ephesians 6:10-18). Believers are told to resist the devil (James 4:7; 1 Peter 5:8-9), not to cast him out.