This book migrates through continents, regions, nations, and villages, in order to tell the stories of diverse kinds of nomadic dwellers. It departs from Africa, en routes itself toward Asia, Oceania, Europe, and culminates in the Americas, with the territories of Latin America, Canada, and the United States. The volume travels through worn out pathways of migration that continue to be threaded upon today, and theologically reflects on a wide range of migratory aims that result also in diverse forms of indigenization of Christianity. Among the main issues being considered are: How have globalization and migration affected the theological self-understanding of Christianity? In light of globalization and migration, how is the evangelizing mission of Christianity to be understood and carried out? What ecclesiastical reforms if any are required to enable the church to meet present-day challenges?