DeMille directed The King of Kings (1927), a biography of Jesus, which gained approval for its sensitivity and reached more than 800 million viewers. The Sign of the Cross (1932) is said to be the first sound film to integrate all aspects of cinematic technique. Cleopatra (1934) was his first film to be nominated for the Academy Award for Best Picture. After more than thirty years in film production, DeMille reached a pinnacle in his career with Samson and Delilah (1949), a biblical epic which became the highest-grossing film of 1950. Along with biblical and historical narratives, he also directed films oriented toward "neo-naturalism", which tried to portray the laws of man fighting the forces of nature.