וְשָׁמַרְתָּ֨ אֶת־הַמִּצְוָ֜ה וְאֶת־הַֽחֻקִּ֣ים וְאֶת־הַמִּשְׁפָּטִ֗ים אֲשֶׁ֨ר אָנֹכִ֧י מְצַוְּךָ֛ הַיּ֖וֹם לַעֲשׂוֹתָֽם׃ (פ)
그런즉 너는 오늘날 내가 네게 명하는 명령과 규례와 법도를 지켜 행할지니라
Rashi
היום לעשותם [WHICH I COMMANDED THEE] TO-DAY TO DO THEM — to do them to-day, but only in the time to come — in the future world — to receive the reward for them (Eruvin 22a).
Chizkuni
ושמרתם את המצוה, “You shall therefore keep the commandment;” your observing His commandments will be appropriate as a repayment for G-d keeping His promises to the forefathers.”
Ibn Ezra
Therefore keep Just as God keeps the covenant, so must you keep His commandments.