We have to take scripture as the infallible source for information on this subject, and there are NO cases of real christians getting possessed. The saved though can dabble in occultic thinfs, or get into things sucg as astrology/fake magic etc, that can allow forSatan to gain a foothold in, and can buffet them, but the good news is that the person can repent of that bad stuff, claim the provosions of Christ, and have victory over the Devil and his ways...