Historians of Christianity, even when innovative in theory and method, have mostly written within national, denominational, or institutional frameworks. Yet many of the most important changes and developments within Christianity have been transnational in scope, trans-denominational in character, and not easily contained within institutional or hierarchical structures. What difference would it make to reimagine the history of Christianity in terms of transnational networks, nodal junction boxes of encounter and transmission, and a greater sense of the core memes and messages of religious traditions and expressions? That is the principal question to be explored in the following chapters.