Cecil B. DeMille is Hollywood's most enduring legend, remembered, and often reviled, for his grandiose biblical sagas, such as Samson and Delilah and his 1956 version of The Ten Commandments, with its cast of tens of thousands before computer graphics made the modern epic mundane. Many judged DeMille a dinosaur both for his movies and his ultraconservative politics. But in his vision of the Bible as an American frontier narrative he recast this old...