Sources,+Hebrew+Man

Read the following source from Bereshit about when the world spoke only one language

Genesis/Bereshit 11:1, 4-8
וַיְהִי כָל-הָאָרֶץ, **שָׂפָה אֶחָת,** וּדְבָרִים, אֲחָדִים.
 * ד** וַיֹּאמְרוּ הָבָה נִבְנֶה-לָּנוּ עִיר, וּמִגְדָּל וְרֹאשׁוֹ בַשָּׁמַיִם, וְנַעֲשֶׂה-לָּנוּ, שֵׁם: פֶּן-נָפוּץ, עַל-פְּנֵי כָל-הָאָרֶץ.
 * ה** וַיֵּרֶד ה', לִרְאֹת אֶת-הָעִיר וְאֶת-הַמִּגְדָּל, אֲשֶׁר בָּנוּ, בְּנֵי הָאָדָם.
 * ו** וַיֹּאמֶר ה', הֵן עַם אֶחָד **וְשָׂפָה אַחַת** לְכֻלָּם, וְזֶה, הַחִלָּם לַעֲשׂוֹת; וְעַתָּה לֹא-יִבָּצֵר מֵהֶם, כֹּל אֲשֶׁר יָזְמוּ לַעֲשׂוֹת.
 * ז** הָבָה, נֵרְדָה, וְנָבְלָה שָׁם, שְׂפָתָם--אֲשֶׁר לֹא יִשְׁמְעוּ, אִישׁ שְׂפַת רֵעֵהוּ.
 * ח** וַיָּפֶץ ה' אֹתָם מִשָּׁם, עַל-פְּנֵי כָל-הָאָרֶץ; וַיַּחְדְּלוּ, לִבְנֹת הָעִיר.

And the whole earth was of one language and of one speech.[…] And they said: “Come, let us build us a city, and a tower, with its top in heaven, and let us make us a name; lest we be scattered abroad upon the face of the whole earth.” And the Lord came down to see the city and the tower, which the children of men built. And the Lord said: “Behold, they are one people, and they have all one language; and this is what they begin to do; and now nothing will be withheld from them, which they purpose to do. Come, let us go down, and messed up their language, that they may not understand one another's speech.” So the Lord scattered them abroad from there upon the face of all the earth; and they abandoned building the city.

[|Click here for more on the Tower of Bavel.]

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What does this Midrash state about the Jewish people's commitment to the Hebrew Language?

//Bamidbar Rabbah 20:22// בזכות ארבעה דברים נגאלו ישראל ממצרים, **שלא שינו את** שמם, ולא **שינו את לשונם**, ולא אמרו לשון הרע, ולא נמצא בהן אחד פרוץ בערוה.

Israel was redeemed from Egypt for four reasons – that they did not change their names, their language, they did not gossip, and there could not be found among them anyone promiscuous.