This book might be called the “heart” of the Old Testament, because it teaches so much of what God cares for. Some of the laws may seem boring, but many of them sound very much like the principles in the New Testament.
Chapters 1-4 is a review of the good things God did in Exodus, Leviticus, and Numbers.
Chapter 5 will sound familiar because it repeats the Ten Commandments.
Three of my favorite chapters in the Old Testament are Deuteronomy 6, 8, and 10.
I thought about writing my dissertation related to chapter 12. You might not understand why, but it is very important that God only allows people to sacrifice to him at one place.
God gives rules for some jobs that are going to be important later in the Bible, especially rules for kings (ch. 17) and prophets (ch. 18).
Chapter 28 explains a lot of what happens in the books of Judges, 1-2 Samuel, 1-2 Kings, and 1-2 Chronicles. If only the Israelites had obeyed what God said here!
Chapters 29-30 predict that Israel will sin and because of that they will go into exile. But God will bring them back from exile. This is an amazing prediction long before it ever happened. God knows the future! More than that, he has planned it all out.