J. Gresham Machen is known as a conservative hero of the fundamentalist-modernist controversy. But was he always so staunchly antimodernist?    In this sweeping new biography, Richard E. Burnett examines the whole of Machen’s life and career—from his early years at Princeton, to his experience in the First World War, to his founding of Westminster Theological Seminary . Burnett pays special attention to topics that have received little attention from biographers, like Machen’s crisis of faith and his support for historical criticism of Scripture.  Incorporating all of Machen’s major works as well as his previously unpublished private correspondence, Burnett crafts a nuanced narrative of Machen’s intellectual journey from enthusiastic modernist to stalwart conservative. Nuanced and thorough, will challenge scholars’ assumptions about Machen and his dynamic era.