14 “If you will revere Hashem, worship Him, and obey Him, and will not flout Hashem‘s command, if both you and the king who reigns over you will follow Hashem your God, [well and good].
im tee-r’-U et a-do-NAI va-a-vad-TEM o-TO u-sh’-ma-TEM b’-ko-LO v’-LO tam-RU et PEE a-do-NAI vih-yi-TEM gam a-TEM v’-GAM ha-ME-lekh a-sher ma-LAKH a-lay-KHEM a-KHAR a-do-NAI e-lo-hay-KHEM
יד אִם־תִּירְאוּ אֶת־יְהֹוָה וַעֲבַדְתֶּם אֹתוֹ וּשְׁמַעְתֶּם בְּקֹלוֹ וְלֹא תַמְרוּ אֶת־פִּי יְהֹוָה וִהְיִתֶם גַּם־אַתֶּם וְגַם־הַמֶּלֶךְ אֲשֶׁר מָלַךְ עֲלֵיכֶם אַחַר יְהֹוָה אֱלֹהֵיכֶם׃
12:14 If you will revere Hashem, worship Him, and obey Him
The prophet Shmuel clarifies to the people that the key to their success will not be their king, but rather their observance of Hashem’s commandments. As Rashi explains, observance of the laws will mean that the People of Israel and its king all live to ripe, old ages. This theme is repeated frequently in the Tanakh. In order for the Children of Israel to be able to live as a free nation in the Land of Israel, they must observe God’s Torah. This is a reminder that their goal is not merely to be free, but rather to be a holy and free nation in Eretz Yisrael. If they do not aspire to this objective, the land will not tolerate their sins and will eventually spit them out (Leviticus 18:26-30)..