Just about everyone who has heard about Christianity and Jesus, whether or not they're Christians, has heard about Jesus casting out demons or healing the demon-possessed. In fact, demons in general are one of the most popular themes from Christianity. This is probably due in part to the fact that scripture doesn't say much about them. Like with the heavenly messengers and other creatures described in visions throughout scripture, there's a lot of room for imagination when it comes to demons. That makes them perfect for pop-culture references and fantasy lore, and the fact that scripture talks about demons possessing people and making them do things sparks a world of possibilities and unanswered questions, but how are demons really presented in scripture? Well, we don't have time to explore all of scripture here, but since I've been studying Mark, let's consider how demons are presented in the gospel of Mark, as a case study. What does Mark have to say abou...