What does the Bible really tell us about the powers of darkness? In 'Demons,' Michael Heiser debunks popular presuppositions about the very real powers of darkness. Rather than traditions, stories, speculations, or myths, 'Demons' is grounded in what ancient people of both the Old and New Testament eras believed about evil spiritual forces and in what the Bible actually says. You’ll come away with a sound, biblical understanding of demons, supernatural rebellion, evil spirits, and spiritual warfare.