Can a Christian be demon-possessed?
Possession implies ownership. A born-again believer becomes a child of God and is therefore "God-possessed". However believers can be demon-OPPRESSED... hence the need for deliverance. In a similar manner, a person can own a house and have that house infested by termites. No one says that the termites possess the house but the termites need to get dealt with. Termites get killed and demons get kicked out!