"... For many Christian authorities the criterion for a book’s inclusion in the canon depended not on the language of composition, but on whether it was normative and authoritative for doctrine and public reading. Yet books that fell outside this category could still be canonical at a lower level, and used for private reading among Christians (compare Tertullian, Cult. fem. 1.3: Gallagher 2012: 20–1), and so were certainly not banned or ignored. Even Athanasius of Alexandria, whose festal letter of 367 ce is often held to demarcate a Christian canon, notes that though certain books are not canonical (οὐ κανονιζόμενα μέν), they were authorized by tradition (τετυπωμένα δὲ παρὰ τῶν πατέρων) for reading to recent converts. For Athanasius these works included Wisdom of Solomon, Sirach, Judith, Tobit, and also Esther, while with most other authorities he included both Esdras A and B in the Old Testament canon ..."