Twenty-Five Unbelievable Years, 1945-1969

The Most Significant Transition in World Events in a 500 Year Period

The 25 Unbelievable Years by Ralph D. Winter is a powerful reflection on the remarkable growth and transformation of the global Christian mission movement from 1945 to 1969. Winter describes these years as “unbelievable” due to the unprecedented spread of Christianity, particularly in non-Western nations, following the end of World War II. He highlights how geopolitical shifts, decolonization, and technological advances created new opportunities for evangelism and church planting. Despite political instability and social upheaval, the church expanded rapidly, especially in Africa, Asia, and Latin America. 

Ralph Winter challenges Western Christians to recognize the significance of this global movement and to support indigenous leadership and missions. He emphasizes the need to view history through a missional lens, where God’s purpose is being fulfilled in unexpected ways. This thought-provoking work calls the church to greater faith, vision, and participation in God’s unfolding plan across the nations during a unique moment in history.