International Bulletin of Mission Research 41(2) of the main traditions or confessions. At the same time, it was guided by an understanding that there is an unmistakable commonality that makes it still meaningful to speak of Christianity in the singular. Present in a bewildering variety of circumstances and in a dazzling diversity of cultural forms, Christian faith is nonetheless marked by an irreducible unity and coherence that demands that we consider a global Christianity. The Atlas of Global Christianity therefore took a fully ecumenical approach in mapping and describing the worldwide Christian faith. Through its maps, tables, graphs, and charts, supported by fifty-two interpretative essays, the Atlas traced the story of the spread of Christianity in every part of the world in the years since 1910. This task involved recognizing extraordinary growth in some regions, as well as decline or stagnation in others.The Atlas was soon recognized as an original and extraordinarily valuable resource. Peter Phan commented: "A book of breathtaking beauty and publishing virtuosity, it is an absolute treasure-trove of information on contemporary global Christianity and supersedes all previous encyclopedias and factbooks on world Christianity, bar none." 4 Amos Yong wrote: "This Atlas is a monumental achievement. . . . I would suggest that this volume needs to be mandatory reading for all missiology programs . . . and will be beneficial for teachers not only for courses in missiology but also in religious studies, history of modern Christianity and globalization. . . . No serious student of world Christianity can afford to be ignorant of what the Atlas has to offer." 5 Charles Farhadian commented, "The Atlas of Global Christianity is a masterful presentation of the geographical spread of Christian faith through text and visually attractive colored maps, tables, and graphs. . . . This marvellous book represents a tremendous achievement and should be a part of college, university, or seminary library collections." 6 The potential of the Atlas for educational purposes was quickly acknowledged. Jan Jongeneel, for example, wrote that he saw "the Atlas of Global Christianity as a highly valuable tool for mission and mission studies. . . . It especially needs to be studied in M.Th. classrooms and in Ph.D. seminars. The reflective surveys, drafted by a team of scholars from around the globe, are as significant to gain knowledge as the geographical maps and statistics." 7 Paul John Isaak found that the book "is a must-read for all who teach mission history, as well as being an essential addition for all theological and religious libraries." 8 Peter Doble underlined its value as an educational resource: "Those involved in Religious Education and Religious Studies will find this Atlas a major contribution to Christian self-understanding in the C21st. Here is a wealth of detail, covering a wide range of concerns, and the essays offer thoughtful, often incisive reflection on the topic or region under review. . . . This Atlas is a mu...