This paper explores the representation and significance of religious themes in film art, analyzing its historical origins, representations in classical and modern films, artistic styles, and its multiple values at the cultural, social and personal levels. The study pointed out that since its birth at the end of the 19th century, religious-themed films have experienced an evolution from classical to modern, reflecting social and cultural changes and technological progress. Classical films convey the solemnity and sacredness of religious beliefs through the adaptation of religious stories, symbolic metaphors, and ritual reproductions; modern films deeply explore the complex relationship between faith and social issues through diverse theme exploration, visual presentation, and emotional expression. Religious-themed films play an important role in cultural inheritance, social criticism, spiritual comfort, aesthetic value and educational significance. With the development of science and technology, cultural integration, and challenges to censorship standards, religious-themed films need to seek development through innovation and breakthroughs in order to continue to exert their unique influence in film art.