Those who preach and teach might enjoy, and profit by, Preaching and Teaching From the Old Testament by Walter C. Kaiser, Jr. The 2003 book is $3.99 today in Kindle format. It is normally $22.00. Click on the book for more information.
And these words that I command you today shall be on your heart. You shall teach them diligently to your children, and shall talk of them when you sit in your house, and when you walk by the way, and when you lie down, and when you rise. You shall bind them as a sign on your hand, and they shall be as frontlets between your eyes. You shall write them on the doorposts of your house and on your gates. (Deuteronomy 6:6-9 ESV)
For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope.(Romans 15:4 ESV)
Now these things happened to them as an example, but they were written down for our instruction, on whom the end of the ages has come.(1 Corinthians 10:11 ESV)