The book of Deuteronomy is comprised of three speeches of Moses that cover these laws (chapters 1 to 4), regulations (chapters 4 to 28), and expectations (chapters 29 to 30).
The book ends with a change in leadership from Moses to Joshua.
The authorship of Deuteronomy is attributed to Moses, since he was the orator of the three messages (or sermons) contained in the book.
A lifelong student of the Bible, Peter DeHaan, PhD, wrote the 700-page website ABibleADay.com to encourage people to explore the Bible. His main blog and many books urge Christians to push past the status quo and reconsider how they practice their faith in every area of their lives.