Most people are skeptical of the spiritual world. Angels and devils are the stuff of fairly tales, right? But the Bible presents the spiritual world as very, very real; perhaps even more real than the physical world. In fact, the scripture seems to indicate that most of the problems we face are primarily spiritual in nature. Is it rational to believe in such a thing? How can we see the unseen world around us? What happens if we remain blind to what is going on behind the scenes? Pastor Dan answers all of these questions and more in the first week of our new series, "When the Devil Knocks."

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