“Lo bashamaim Hee” (Devarim 30:12) – Torah “is not found in heaven” – Moshe Rabbeinu explains Jews that Torah and mitzvoth they received are very close to their everyday life and needs:
“For that (the Torah) is your life and the length of your days” (Devarim 30:20) – this is not some abstract set of rules for mythical reward and punishment – it’s very down-to-earth manual on “How to avoid shooting-yourself-in-a-leg” and live happy prosperous life if nothing more.