Philo
In the 1st century CE, Philo Judaeus of Alexandria discussed sacred books, but made no mention of a three part division of the Bible; though his De vita contemplativa (sometimes suggested in the 19th century to be of later, Christian, authorship) does state at III(25) that "studying… the laws and the sacred oracles of God enunciated by the holy prophets, and hymns, and psalms, and all kinds of other things by reason of which knowledge and piety are increased and brought to perfection." Philo quotes almost exclusively from the Torah, but occasionally from the non-canonical Ben Sira and Wisdom of Solomon.
Read more about this topic: Development Of The Hebrew Bible Canon