Therefore this paper will analyze the structure of progressive Christianity through the lens of evangelicalism. This analysis will synthesize historian David Bebbington’s four-part model of evangelicalism with sociologist Laura Edles’ two core emphases of progressive Christianity. This will yield a progressive trilateral that reveals the contrasts between evangelical Christianity and progressive Christianity. This paper will then compare progressive Christianity and evangelicalism on each of the three points of the trilateral model: the source of authority, the content of morality, and the practice of mission. This comparison will demonstrate how progressive Christianity distorts, and in one case omits, key elements of evangelical Christianity. The goal is to expose the fundamental clashes between these two systems and reclaim the term “Christian” from its progressive misuse. In other words, my purpose is not to show how progressive Christianity is anti-Christian below the surface; my goal is to show that it is anti-Christian right on the surface.