Andrew F. Walls's first collection of essays, The Missionary Movement in Christian History, was named by Christianity Today in their list of the top 100 most influential books of the twentieth century. In this third collection, Walls carries forward his decades-long project, upending staid interpretations of Christian history by examining the role of mission and cross-cultural transmission of the Gospel in the formation of World Christianity. In essays marked by profound learning and his characteristic wit, Walls covers themes ranging from the transmission of Christian faith, to Africa in Christian thought and history, along with reflections on a broad range of mission figures, and a personal reflection on "missiology as a vocation."