Kommentar zu Dewarim 30:15

את החיים ואת הטוב LIFE AND GOOD — the one is dependent upon the other: if you do good, behold, there is life for you, and if you do evil, behold, there is death for you. Scripture goes on to explain how this is:

SEE, I HAVE SET BEFORE THEE THIS DAY LIFE AND GOOD, AND DEATH AND EVIL. He returns to exhort them yet again, to tell them that there are two courses in their hands and it is in their power to walk in whichever they desire, and there is no power below or above that will withhold them or stop them. And he calls heaven and earth to bear witness against them a second time,⁷⁵Further, Verse 19. after he had said,I call heaven and earth to witness against you this day, that ye shall soon utterly perish,⁷⁶Above, 4:26. for now he said, I call heaven and earth to witness against you this day, that I have set before thee life and death⁷⁵Further, Verse 19. which are the blessing and the curse, and that I have counselled you that you should choose life, that hou mayest live, thou and thy seed.⁷⁵Further, Verse 19. Thus he is now like someone who has the witnesses sign at the end of all his words.
Vayeilech

Life and the good. If it is life that you seek, look towards the good, to do that which is good in the eyes of Hashem. And if you ask, why “good” is not mentioned first, for it is through the good actions that one merits life, the answer is that it comes to warn us not to do that which is good in Hashem’s eyes only in order to live. But rather to live in order to do that which is good. A person should not seek life for material gain, but only in order to spend his life serving his Creator.