American evangelicalism is big business. For decades, the world’s largest media conglomerates have sought out evangelical consumers, and evangelical books have regularly become international best sellers. In the early 2000s, Rick Warren’s spent ninety weeks on the Best Sellers list and sold more than thirty million copies. But why have evangelicals achieved such remarkable commercial success? According to Daniel Vaca, evangelicalism depends upon commercialism. Tracing the once-humble evangelical book industry’s emergence as a lucrative center of the US book trade, Vaca argues that evangelical Christianity became religiously and politically prominent through business activity. Through areas of commerce such as branding, retailing, marketing, and finance, for-profit media companies have capitalized on the expansive potential of evangelicalism for more than a century. Rather than treat evangelicalism as a type of conservative Protestantism that market forces have commodified and corrupted, Vaca argues that evangelicalism is an expressly commercial religion. Although religious traditions seem to incorporate people who embrace distinct theological ideas and beliefs, Vaca shows, members of contemporary consumer society often participate in religious cultures by engaging commercial products and corporations. By examining the history of companies and corporate conglomerates that have produced and distributed best-selling religious books, bibles, and more, Vaca not only illustrates how evangelical ideas, identities, and alliances have developed through commercial activity but also reveals how the production of evangelical identity became a component of modern capitalism.