Deuteronomy 32:47 in the World English Bible
For it is no vain thing for you, because it is your life, and through this thing you shall prolong your days in the land, where you go over the Jordan to possess it.”
Context
46 And he said unto them, Set your hearts unto all the words which I testify among you this day, which ye shall command your children to observe to do, all the words of this law.
47 For it is not a vain thing for you; because it is your life: and through this thing ye shall prolong your days in the land, whither ye go over Jordan to possess it.
48 And the LORD spake unto Moses that selfsame day, saying,