 Christians and demon possession, biblically speaking, Christians can be attacked and affected by demons. Ephesians 6, 1 Peter 5-8, but never possessed, 1 John 5-18, 1 Peter 2-9. 1 John 4-4 says, because the Spirit who lives in you is greater than the Spirit who lives in the world. Clearly, the Bible there is telling us that one Spirit is in us and the other is not. Yes, at times, Christians do need deliverance before the true believer. This doesn't mean exorcism, where the demon exhibits control over their physical capacities. In the Bible, there is only one word used to describe possession or demonization, and it's never used to describe a believer. So Christians can be attacked by demons, but not possessed. We need deliverance, not exorcism.