The Book of Beliah

Jason is just out of high school when he discovers he has the ability to leave his body. After achieving an intense out of body experience, he encounters a luminous female entity that says to him, "This is how it is!" Believing she is no more than a fantasy, Jason is shocked to discover his dream girl, Tamara, in his small town of Hope, Alabama.
Jason starts having horrible visions, which correlate with the arrival of Beliah, author of Witchcraft: A Study into the Myth, in Hope for a book signing. Beliah is much more than he seems, and Jason soon comes to realize Tamara is there in pursuit of this so-called author who is actually a homicidal, demonic sorcerer.
While reeking havoc and destruction wherever he goes, Beliah's only purpose is total domination. Together, Jason and Tamara must somehow defeat this monster whose powers are greater than either of them.