Sforno on Deuteronomy 30:19/ספורנו על דברים ל׳:י״ט

1so choose life, you will opt for eternal life

2in order that you may stay alive, you and your seed, to love the Lord your God, when I said to choose life, I did not mean for the sake of the reward. Rather, you should only choose what is truly life, such that you only desire life on earth for this purpose, that you should love the Lord your God by way of your recognizing His goodness and His great magnificence.