In a previous post we considered the question, “ Can a Christian be demon-possessed? ” we said no. But if a non-Christian is demon possessed, what the the signs of demonic possession, and is a Christian able to make the determination that someone is possessed by a demon?
No amount of learning, no superiority of talent, nor even the pretension to inspiration, can justify a departure from the . . . truths taught by men to whose inspiration God has borne witness. All teachers must be brought to this standard; and even if an angel from heaven should teach anything contrary to the Scriptures, he should be regarded as anathema, Gal. 1:8. It is a matter of constant gratitude that we have such a standard whereby to try the spirits whether they be of God (Commentary on the Epistle to the Romans [Grand Rapids: Eerdmans, 1972], p. 395).