Ancient Christian Theologian and author, John Cassian, said, “We cannot enter the battle of the inner man unless we have been set free from the vice of gluttony.” Cassian’s sentiment has been echoed throughout history. In our modern world the sin of gluttony is rarely spoken of, being replaced by words about the disease of obesity. But, as this sermon series will show, gluttony is not synonymous with obesity. Instead, “gluttony is not considering our relationship with God when making decisions about the food we eat” Can this really be a sin? If so, why? Does this really have adverse affects? If so, what are they? This sermon series defines gluttony, teaches why it is a sin, and shows its deadly affects.