"Deuteronomy (Greek: Δευτερονόμιον, "second law") or Devarim (Hebrew: דְּבָרִים‎, literally "things" or "words") is the fifth book of the Hebrew Bible, and the fifth of five books of the Jewish Torah/Pentateuch. A large part of the book consists of five sermons delivered by Moses reviewing the previous forty years of wandering in the wilderness, and the future entering into the Promised Land. Its central element is a detailed law-code by which the Israelites are to live within the Promised Land. Theologically the book constitutes the renewing of the covenant between YHWH, the Jewish God, and the 'Children of Israel.'"
(Summary by Wikipedia)