The Vatican's Letter to the Bishops of the Catholic Church on the Collaboration of Men and Women in the Church and in the World, issued in 2004 to reinterpret biblical creation accounts, were not as successful as they might have been. Instead of focusing attention on social structures of gender domination, the document criticizes feminist theories, which, supposedly, lead to tensions between sexes or tend to destroy family values. I have tried to reinterpret the same cardinal biblical creation accounts by (...) means of an historical-critical approach, etymological interpretation and hermeneutics, and to show how sexual and gender identities are unintentionally constructed by the authors of these accounts and how structures, appearing in these accounts as `structures of sin' have affected the interpretation of these identities in the same Bible and in the world of formation of the New Testament. The story of `primordial sin' in this case is a metaphor of socialization, for the metaphor of the tree of knowledge of good and evil, is to be understood as the tree of knowledge of opinions, rooted in society, tradition, culture, concerning what is good and what is evil, acceptable and unacceptable. (shrink)