For Sinners Only" is considered the "bible" of the Oxford Group movement, a Christian spiritual fellowship founded by Frank Buchman in the 1920s. The book provides an inside look at the Oxford Group and its founder, Buchman, an American whose vision was to bring about large-scale spiritual transformation to address the world's problems. The book was written by A.J. Russell, a London newspaper editor who initially investigated the Oxford Group movement impartially. "For Sinners Only" tells the story of the Oxford Group and the principles it followed, which centered around personal surrender to God and living a spiritual life under God's guidance. The book was highly influential, and widely read by the Oxford Group and Alcoholics Anonymous in its early days.