Book excerpt: Entangled Christianities looks at Christianity in flux. Each chapter recounts a moment of crisis and opportunity in the history of Christianity; from the selection of the biblical canon to the Iconoclast struggle of the Reformation, and from the religious conversions of Scandinavian Norsemen and Native Americans to the establishment of religious liberty in the US Constitution. In each event, Christianity engages in a dialogue with internal and external voices, thereby negotiating the shape and meaning of Christianity. Underlying these negotiations is an often unstated reality; that there is not and never has been a single Christianity. The meaning and direction of Christianity was disputed, even in the days of Peter, Paul and James. The history of Christianity can perhaps be better understood as a history of Christianities. This work is designed to capture pivotal moments, wherein Christianity encountered challenges to its identity and structures.