A recent USA Today article quotes University of Chicago political science professors Eric Oliver and Thomas Wood as saying that in any given year roughly half of Americans believe in at least one conspiracy theory. Given the pervasive nature of conspiracy theories, Tim Pebworth examines what the Bible says about conspiracy theories and challenges us to think critically about what we hear and see, asking the hard questions about motivations and intentions of those who promote these alternative theories. The sermon looks at what the ancient prophet Isaiah says about conspiracy theories, the interesting linkage to the ancient and modern philosophy of Gnosticism and how to evaluate these theories in light of Biblical teachings.