Noted Christian Writer. Vance Havner began writing the very first of his more than 40 books shortly after the start of his 70 year ministry. Vance's best known book, Though I Walk Through The Valley, details the loss of his beloved wife, Sarah. He was a dedicated evangelist who spoke locally at churches and nationally at conventions to large crowds and appreciative audiences. Billy Graham called Havner, "The most quoted preacher of the twentieth century." Through reading his books, thousands were led to experience God in a new and exciting way.