Three elements emphasize the uniqueness of Sefer Devarim in the context of the Torah: it is a speech; the contents are, to a large extent, a repetition; and the author of the book was Moshe, instead of God. Abarbanel believes Moshe wrote the book by God’s command. Reb Tzadok wrote that Devarim is the start of the Oral Torah – a reflection of God’s Torah in man’s creation. Devarim turns God’s past revelation into an ongoing, present day fact.