הַיּ֣וֹם הַזֶּ֗ה יְהוָ֨ה אֱלֹהֶ֜יךָ מְצַוְּךָ֧ לַעֲשׂ֛וֹת אֶת־הַחֻקִּ֥ים הָאֵ֖לֶּה וְאֶת־הַמִּשְׁפָּטִ֑ים וְשָׁמַרְתָּ֤ וְעָשִׂ֙יתָ֙ אוֹתָ֔ם בְּכָל־לְבָבְךָ֖ וּבְכָל־נַפְשֶֽׁךָ׃
En ce jour, l’Éternel, ton Dieu, te recommande d’exécuter ces diverses lois et ces statuts; tu t’appliqueras donc à les observer de tout ton cœur et de toute ton âme.
Akeidat Yitzchak
The fact that no mention is made of the Torah being received in connection with the Shavuot festival, indicates that a commandment which is ongoing, applies on all three hundred sixty five days a year, at all hours during day and night, unlike other commandments, cannot appear to be tied to one particular date only, such as is the case with Passover or Tabernacles, for instance. Since all of mankind accepts the concept of Divine justice, i.e. retribution, in what way are the Jewish people unique? How does embracing that concept constitute a specific Jewish article of faith?