The film, like the book, was considered controversial. It was met with especially harsh criticism by the Catholic Church for the accusation that it is behind a two-thousand-year-old cover-up concerning what the Holy Grail really is and the concept that Jesus Christ and Mary Magdalene were married and that the union produced a daughter, as well as its treatment of the organizations Priory of Sion and Opus Dei. Many members urged the laity to boycott the film. In the book, Dan Brown states that the Priory of Sion and "all descriptions of artwork, architecture, documents and secret rituals in this novel are accurate."