There’s an interesting discussion about what the Torah’s constitution might look like, and many famous scholars looked to the Torah as a source of political theory. One particular thread of that discussion is the role of a king. The Torah doesn’t particularly advocate for monarchy, and imposes many constraints:
כִּי־תָבֹא אֶל־הָאָרֶץ אֲשֶׁר ה אֱלֹהֶיךָ נֹתֵן לָךְ וִירִשְׁתָּהּ וְיָשַׁבְתָּה בָּהּ וְאָמַרְתָּ אָשִׂימָה עָלַי מֶלֶךְ כְּכָל־הַגּוֹיִם אֲשֶׁר סְבִיבֹתָי׃ שׂוֹם תָּשִׂים עָלֶיךָ מֶלֶךְ אֲשֶׁר יִבְחַר ה אֱלֹהֶיךָ בּוֹ מִקֶּרֶב אַחֶיךָ תָּשִׂים עָלֶיךָ מֶלֶךְ לֹא תוּכַל לָתֵת עָלֶיךָ אִישׁ נָכְרִי אֲשֶׁר לֹא־אָחִיךָ הוּא׃ רַק לֹא־יַרְבֶּה־לּוֹ סוּסִים וְלֹא־יָשִׁיב אֶת־הָעָם מִצְרַיְמָה לְמַעַן הַרְבּוֹת סוּס וַיהוָה אָמַר לָכֶם לֹא תֹסִפוּן לָשׁוּב בַּדֶּרֶךְ הַזֶּה עוֹד׃ וְלֹא יַרְבֶּה־לּוֹ נָשִׁים וְלֹא יָסוּר לְבָבוֹ וְכֶסֶף וְזָהָב לֹא יַרְבֶּה־לּוֹ מְאֹד׃ וְהָיָה כְשִׁבְתּוֹ עַל כִּסֵּא מַמְלַכְתּוֹ וְכָתַב לוֹ אֶת־מִשְׁנֵה הַתּוֹרָה הַזֹּאת עַל־סֵפֶר מִלִּפְנֵי הַכֹּהֲנִים הַלְוִיִּם׃ וְהָיְתָה עִמּוֹ וְקָרָא בוֹ כָּל־יְמֵי חַיָּיו לְמַעַן יִלְמַד לְיִרְאָה אֶת־יְהוָה אֱלֹהָיו לִשְׁמֹר אֶת־כָּל־דִּבְרֵי הַתּוֹרָה הַזֹּאת וְאֶת־הַחֻקִּים הָאֵלֶּה לַעֲשֹׂתָם׃ – If, after you have entered the land that Hashem has assigned to you, taken possession of it and settled in it, you decide, “I want a king over me, like all the nations around me,” you shall be free to set a king over yourself, one chosen by Hashem. Be sure to select your king from your own people; you must not select a foreigner over you, one who is not your kin. Moreover, he shall not keep many horses… And he shall not have many wives, lest his heart go astray; nor shall he amass silver and gold to excess. When he is seated on his royal throne, he must write a copy of this Torah written for him on a scroll by the levitical priests. Thus he will not act haughtily toward his fellows or deviate from the Instruction to the right or to the left, to the end that he and his descendants may reign long in the midst of Israel. (18:14-20)
The Gemara notes that the king actually must write two Sifrei Torah; one that remains in the royal treasury, and another that he carries with him wherever he goes.
The Rambam explains that during a king’s reign, he must write a Torah scroll for himself in addition to the scroll left to him in the treasury by his ancestors.
Even if the king inherits a treasury filled with beautiful Sifrei Torah from ancestors, the very act of writing the Torah scroll is a way of making the Torah, quite literally, one’s own. The act of doing that writing becomes a powerful pedagogy through which the king comes to understand what his moral position must be.
In political theory, this is called the rule of law, that all persons, institutions, and entities are accountable to the same body of law. In real day to day life, laws matter only as far as they command the collective loyalty of those in power; it requires a governing class that cares about law and government and tradition, rather than personal power and gain. By making the king go through this exercise, the Torah hopes and envisions that a king will understand the gravity of his office.
The Torah’s perspective is that all men are just men – in the very beginning, the Torah says that humans are formed “in the image of God,” which R’ Jonathan Sacks teaches to mean as destroying a divine right to oppress others. It is political dynamite, from which we can learn about the sanctity of life, the dignity of individuals and human rights, the sovereignty of justice and the rule of law, free society, all because God bestows his image on everyone, not just kings and emperors. It follows that we would expect a Jewish conception of a king to look qualitatively different.
R’ Shlomo Farhi explains that the higher in stature and authority someone is, the closer scrutiny they can expect. Intuitively, a powerful person needs more humbling – not necessarily in a negative way, but more so that a successful leader is someone whose leadership exists to help his people.
Leadership is about being of service to others, not being served by others.