William F. P. Burton's career straddled several worlds that seemed at odds with each other. As a first-generation Pentecostal he pioneered, with James Salter, the Congo Evangelistic Mission (CEM) at Mwanza, Belgian Congo in 1915. The CEM became a paradigm for future Pentecostal Faith Mission work in Africa, thanks to Burton's propagandist writings that were published in at least thirty European and North American missionary periodicals. His extensive publications, some twenty-eight books, excluding tracts and articles in mission journals, reveal that the CEM was a missionary movement animated by a relentless proselytism, divine healing, exorcism, and the destruction of so-called “fetishes.” The CEM's Christocentric message required the new believer to make a public confession of sin and reject practices relating to ancestor religion, possession cults, divination, and witchcraft. It was a deeply iconoclastic form of Protestantism that maintained a strong distinction between an “advanced” Christian religion, mediated by the Bible, and an idolatrous primitive pagan religion. Burton's Pentecostalism had many of its own primitive urges, harkening back to an age where miraculous signs and wonders were the stuff of daily life, dreams and visions constituted normative authority, and the Bible was immune to higher criticism. But his vision also embraced social modernization and he preached the virtues of schooling and western styles of clothing, architecture, and agriculture. It was this combination of primitive and pragmatic tendencies that shaped the CEM's tense relations with the Belgian colonial state.