Thematic Bible: What is not vain

And Moses will finish speaking all these words to all Israel: And he will say to them, Set your hearts to all the words which I call upon you to witness this day, which ye shall command your sons to watch and to do, all the words of this law. For it is not an empty word for you, but it is your life; and in this word ye shall prolong the days upon the land which ye pass through Jordan there to inherit it