The RSV was the only major translation in English that included both the standard Protestant canon and the books that are traditionally used by Roman Catholic and Orthodox Christians (the so-called "Apocryphal" or "Deuterocanonical" books). Standing in this tradition, the NRSV is available in three ecumenical a standard edition with or without the Apocrypha, a Roman Catholic Edition, which has the so-called "Apocryphal" or "Deuterocanonical" books in the Roman Catholic canonical order, and The Common Bible, which includes all books that belong to the Protestant, Roman Catholic, and Orthodox canons. The NRSV stands out among the many translations available today as the Bible translation that is the most widely "authorized" by the churches. It received the endorsement of thirty-three Protestant churches. It received the imprimatur of the American and Canadian Conferences of Catholic bishops. And it received the blessing of a leader of the Greek Orthodox Church.