Philo of Alexandria was an expositor of the Pentateuch, rooted in the Synagogue, but probably also active in a private school of a more philosophical kind. In this paper I will sketch his understanding and labeling of the Deuteronomy, and then, in order to see his reception and reactualization,?I will deal with some cases in which he applies texts from Deuteronomy as law and exhortations for his readers.