Unique for its breadth in studying theologians not only from Europe and North America but also from Latin America, Asia, and Africa, this landmark volume introduces the doctrine of the Trinity, examining the work and thought of contemporary theologians throughout the world. Veli-Matti Karkkainen provides an overview of the biblical roots of the doctrine, discussing both the idea of plurality in God in the Old Testament and the rise of Trinitarian understandings in the New Testament. He details the historical growth of Trinitarian traditions and delves into specific theologies, both Western and non-Western. Also including both an introductory consideration of the doctrine's significance and a concluding assessment and agenda for future thought, Karkkainen's The Trinity is the broadest and most comprehensive contemporary study on the Trinity available.