Multiple lines of evidence support the canonicity of the Deuterocanonicals

The Deuterocanonicals, including books such as Tobit, Judith, Baruch, Cyrak, Wisdom, and First and Second Maccabees, were considered to be canonical in the Catholic Church and many Eastern Orthodox and other Eastern Christian churches. These books were included in the Septuagint, the major Greek translation of the Old Testament, which was the version overwhelmingly quoted by the authors of the New Testament. The New Testament authors not only quoted from the Septuagint but also alluded to the Deuterocanonical books. Early Christian fathers widely attested to the use of the Deuterocanonicals as scripture, and their canonicity was affirmed at various councils, including the Council of Trent.