The book of Deuteronomy is comprised of three sermons delivered by Moses in the last month of his life. Just before he died, he delivered laws of love to govern the Israelites. The glory of the gospel is on every page and the cross is demanded in every chapter. God requires perfect obedience, holiness, and justice, which are only found in Jesus Christ, the Son of God, who is provided as our substitute. Jesus Christ, who kept every law, imputed His obedience to unworthy sinners.
A broad range of issues are covered in the book of Deuteronomy. You will find lessons in leadership in chapter 1:9–18, responsibility for community in chapter 3:12–33, education by parents in chapter 4:9–10, poverty, homelessness, debt, drug abuse, honesty in business, management of money, welfare, personal hygiene, marriage, sexuality, conservation, care of the elderly, human rights, child abuse, injustice, dangers of the occult, and the safety of your house.