Deuteronomy 32:45-47

And when Moses finished speaking all these words to all Israel, then he said to them, “Take to heart all the words that I am admonishing against you today concerning which you should instruct them with respect to your children so that they will observe diligently all the words of this law, for it is not a trifling matter among you, but it is your life, and through this word you will live long in the land that you are about to cross the Jordan to get there to take possession of it.”