Aimed at bringing contemporary concerns in mission theology to a wide-reading public, this volume flows from Newbigin's extensive experience in the mission field and from lectures developed especially to prepare men and women for missionary service. Newbigin describes the Christian mission as the declaration of an open secret--open in that it is preached to all nations, secret in that it is manifest only to the eyes of faith. The result is a thoroughly biblical attempt to lead the church to embrace its Christ-given task of presenting the gospel in our complex modern world. This revised edition includes a helpful index and a new preface.