We don’t have to go to Heaven ourselves to learn God’s Law; we don’t have to die to keep it. God’s Law is so close to us, we can taste it. That’s a key lesson in the dual Torah reading נִצָּבִים Nitzavim (“standing,” Deuteronomy 29:9–30:20) and וַיֵּלֶךְ Vayelech (“he went,” Deuteronomy 31:1–30). God’s words are to be “right at the tip of our tongue,” so when we it in our “mouths,” we can “swallow” it and incorporate it into our everyday lives.
As with other parts of life, we have to cross-check our thoughts and actions with Scripture. This is why the book of Deuteronomy has been given us. We know that Messiah Yeshua followed Torah to the letter, and we can look at His perfect example to follow it ourselves.
The book of Deuteronomy applies to us, regardless of where we come from, whether we are born Israelites or grafted into Israel (Romans 11). It is addressed to everyone from the lowest servant to the highest leader, all those who believe in God.