Demon possession is no joke and is mentioned many times in The Holy Word of God. The good news is that The son's of God have power and authority over these foul spirits. There are many ways to open the door to allow evil spirits and spirits of infirmity to come upon you. I suggest that you should follow what The Bible says in the Book of James 4:7 "submit to God, resist the devil and he will flee from you"... If anyone has a problem in this area and needs help, please let me know. I pray for your blessing and peace! Shalom, Brother Charlz