Deuteronomy 32
46 Ref and saith unto them, `Set your heart to all the words which I am testifying against you to-day, that ye command your sons to observe to do all the words of this law,
47 Ref for it `is' not a vain thing for you, for it `is' your life, and by this thing ye prolong days on the ground whither ye are passing over the Jordan to possess it.'