The Layman in Christian History, a 1963 World Council of Churches project, provides a comprehensive historical overview of the role, significance, and contributions of ordinary Christian members (the laity) throughout church history, from the early church to the modern era, exploring their faith, struggles, and participation in spreading Christianity across various cultures and continents, emphasizing their vital, active role beyond just passive membership. In essence, it's a historical study that champions the vital, often overlooked, story of everyday believers within the vast narrative of Christianity, revealing their crucial, active presence.