זוהר, נח מ״דZohar, Noach 44

Segment 1א׳

וַיֹּאמֶר יְיָ הֵן עַם אֶחָד וְשָׂפָה אַחַת לְכֻלָּם. בְּגִין דְּכֻלְהוּ כְּחֲדָא, בְּיִיחוּדָא דְּכֻלְהוֹן יַעַבְדוּן וְיִצְלְחוּן בְּעוֹבָדַיְיהוּ. יִתְבַּדְּרוּן דַּרְגִּין כָּל חַד לְסִטְרֵיהּ. וּבְגִין כָּךְ יִתְבַּדְּרוּן כָּל הַנֵּי דִלְתַתָּא. מַה כְּתִיב וַיָּפֶץ יְיָ אוֹתָם מִשָּׁם.

AND THE LORD SAID: BEHOLD, THEY ARE ONE PEOPLE, AND THEY HAVE ALL ONE LANGUAGE, i.e. being united they may indeed succeed in their undertaking. Let, therefore, all the grades be dispersed, each in its own direction, and in this way mankind below will also be dispersed. Hence it it written: AND THE LORD SCATTERED THEM ABROAD FROM THENCE.

Segment 2ב׳

וְאִי תֵימָא לִישַׁנְהוֹן אַמַּאי אִתְבַּלְבֵּל (אתבדר ובלבל לון קודשא בריך הוא). אֶלָּא בְּגִין דְּכֻלְהוֹן מְמַלְּלִין בִּלְשׁוֹן הַקֹּדֶשׁ. הַהוּא לִישְׁנָא קָא עָבִיד לוֹן סִיּוּעָא. בְּגִין דִּבְעוֹבָדָא וּבְמִלּוּלָא דְפוּמָא תַּלְיָין מִלִּין אִלֵּין לְאַדְבְּקָא כַּוָּנָה דְלִבָּא. וּבְדָא עָבְדֵי סִיּוּעָא לְהַהוּא אֲתַר דְּבָעֵי לְאַקָמָא.

Why was their language confounded? Because they all spoke the holy tongue, and this was of help to them. For in the utterance of prayer, it is Hebrew words which fully express the purpose of the heart, and thus help to the attainment of the desired goal;

Segment 3ג׳

וְעַל דָּא אִתְבַּלְבָּל לִישַׁנְהוֹן דְּלָא יָכִילוּ לְאִתְתַּקָּפָא רְעוּתְהוֹן בִּלְשׁוֹן הַקֹּדֶשׁ. כֵּיוָן דְּאִתְחַלַּף לִישַׁנְהוֹן לָא אַצְלָחוּ בְּעוֹבָדָא (כט א בס"ת) בְּגִין דְּחֵילָא דִּלְעֵילָא לָא יָדְעֵי וְלָא אִשְׁתְּמוֹדְעֵי בַּר בִּלְשׁוֹן הַקֹּדֶשׁ. וְכַד אִתְבַּלְבָּל לִישְׁנָא דִלְהוֹן אִתְחַלַּשׁ חֵילֵיהוֹן וְאִתְבַּר תּוּקְפָא דִלְהוֹן.

hence their tongue was confounded in order that they might not be able to express their desires in the holy tongue. Since the angels on high do not understand any language save the sacred language, therefore as soon as the language of the rebels was confounded they lost the source of their power.