The book of Joshua is a very positive book in the Bible. It is a book about the faithfulness of God, written to strengthen our faith in his promises, particularly the promise that Jesus Christ is preparing a new home for us where we can enjoy rest in his presence (Hebrews 4:1–16). It is also a book about our responsibility toward God. The Lord has made promises to us. He has shown himself to be worthy of our trust. And in this book we will see how the Lord calls us to now be faithful to him.
In light of the purpose of Joshua, the goal of your sermon must be to show how God has been faithful to us, and to what response the Lord is calling us. Joshua 13:1–33 focuses our attention on our future inheritance. God wants us to dwell in his presence and he has sent his Son to redeem us so that we can look forward to a future with him. Now we must live in light of that future.
1 Now Joshua was old and advanced in years, and the LORD said to him, “You are old and advanced in years, and there remains yet very much land to possess.