In Parshas Yisro, the nation of Israel arrives at the Wilderness of Sinai on Rosh Chodesh Sivan and camps opposite Mt. Sinai. There they spend the next days preparing for Matan Torah (and there they will stay for the next almost-one-year learning many mitzvos, building the Mishkan and preparing for their planned [but ultimately aborted] entry into the Promised Land).
About their encampment at the mountain, the pasuk tells us: וַיַּֽחֲנ֖וּ סִינַ֔י מִדְבַּ֣ר אוּ֙בֹ֨וַיָּ מֵֽרְפִידִ֗ים וַיִּסְע֣וּ הָהָֽר נֶ֥גֶד יִשְׂרָאֵ֖ל שָׁ֥ם וַיִּֽחַן בַּמִּדְבָּ֑ר - And they journeyed from Refidim, and they arrived in the desert of Sinai, and they encamped in the desert, and Israel encamped there opposite the mountain (Shemos 19:2). Noting an anomaly in this verse - for the verbs are all written in the plural form, except for “וַיִּֽחַן” which is singular and literally means “and he camped” - Rashi, quoting the Sages points out: וּבְמַחֲלֹקֶת בְּתַרְעוֹמוֹת הַחֲנִיּוֹת כָּל שְׁאָר אֲבָל ,אֶחָד בְּלֵב אֶחָד כְּאִישׁ .יִשְׂרָאֵל שָׁם וַיִּֽחַן - And Israel encamped there - as one man with one heart, but all the other encampments were with complaints and with strife.
The encampment at Har Sinai was different than all others, for here, they were united. Their unity was so strong that they stood before G-d like one man, with one heart.
In our world torn asunder, when the nations of the world rise up once again to destroy our nation and our Land - may the Almighty have mercy upon us - it behooves us to remember this well-known Rashi. While the greatest protection that Am Yisrael has is the holiness, beauty and wisdom of Torah, ultimately, the Torah can only truly rest when our people are united. While it is true there are Jews of many different hashkafos, dress, language, appearance, countries of dispersion and all across the religious spectrum - and each must stay true to the emes of Torah and masorah as transmitted by his rebbe/rav/teacher - despite differences, we must strive to be united as one nation.
As we come up to the yomtov of Purim, we must remember that to the nations of the world, we are one nation. They do not differentiate between different sects of Jews, and we must take to heart the words of Haman to Achashvairosh, in his request to annihilate the nation:
שֹׁנ֣וֹת וְדָֽתֵיהֶ֞ם מַלְכוּתֶָ֑ מְדִינ֣וֹת לכֹ֖בְּ הָֽעַמִּ֔ים בֵּ֣ין וּמְפֹרָד֙ מְפֻזָּ֤ר עַם־אֶחָ֗ד יֶשְׁנ֣וֹ אֲחַשְׁוֵר֔וֹשׁ לַמֶּ֣לְֶ הָמָן֙ אמֶריֹּ֤וַ לְהַנִּיחָֽם אֵֽין־שֹׁוֶ֖ה וְלַמֶּ֥לְֶ עֹשִׂ֔ים אֵינָ֣ם הַמֶּ֨לְֶ֙ וְאֶת־דָּתֵ֤י מִכָּל־עָ֗ם - And Haman said to King Achashvairosh, "There is a one nation scattered and separate among the peoples throughout all the provinces of your kingdom, and their laws differ from those of every other nation, and they do not keep the king's laws - and to the king - there is no use to leave them alone” (Esther 3:8).
Though scattered and dispersed throughout 127 provinces, surely speaking different languages, with different dress, different head coverings, different shuls and different schools... to Haman, we were all one. If Haman knew this to be true (as do his descendants throughout the generations, dayeinu!), should we not know it to be true as well?
We must strive to recognize that it is the koach of Torah that binds us as one - as the nation understood at the foothills of Sinai - and not wait until the Hamans of the world remind us.