A significant number of Muslim communities throughout the world reflect varying degrees of involvement in Islamic mysticism. What bridges are present in this context that will facilitate not only evangelism, but also discipleship and community formation? Matthew Friedman guides the reader on a journey examining the response of the early Christian community to the challenges of ancient Jewish and Hellenic mysticism, focusing on the central idea of "union with God in Christ." Far from finding this to be a leftover from the early Church, he discovers that this theme remained crucial into the Reformation, particularly in the writing and work of eighteenth-century figures John and Charles Wesley.Join Friedman as he explores resources for discipleship and community building that will be relevant to both scholars and practitioners alike, and will be effective for witness within modern contexts of Islamic mysticism worldwide.