Sforno on Numbers 15:40/ספורנו על במדבר ט״ו:מ׳

1למען תזכרו, so that you would be free from thoughts of vain matters; once you are no longer concerned with the pursuit of the transient material allusions n this life, you will be receptive to the marvelous ways of the Torah, through the study of which you will come to recognise the greatness of the Creator and His amazing love for His creatures.

2ועשיתם את כל מצותיו, as a result you will perform all His commandments from both love and reverence for Him.

3והייתם קדושים לאלוקיכם, as a corollary you will be holy unto your G’d, deserving eternal life as He had meant for you to qualify for when He had said in Exodus 19,6 that “you should become for Him a nation of priests and a holy people.”