What does Deuteronomy 6:2 mean?

You need to respect the Lord your God and keep all his rules and commands that I'm giving you—both you and your children and grandchildren—for as long as you live. If you do, you'll have a long life. Deuteronomy 6:2 - Modern Text Bible

(Obeying God isn't just for one generation; it's meant to be passed down, bringing life and stability.)