“And there was in their synagogue a man with an unclean spirit; and he cried out,”
King James Version (KJV)
1:21 #Lu 4:31|.
Mr 1:23 A man with an unclean spirit. See PNT "Mt 8:28". Compare Lu 4:31-37. The New Testament plainly teaches that demoniac possession was a real and actual possession of the soul by a fallen spirit.