The Teruah characteristic that enveloped Am Yisrael at Matan Torah directed Yisrael that their verbal communications to one another must remain separate from the word usage of the Seventy Nations that only came about because of their rebellion against Hashem. We were given by Hashem Lashon Hakodesh a holy language because we are a holy people. This is how Yosef proved his identity to his brothers in that he spoke Lashon Hakodesh (Bereishis 45,12 Rashi). It is the language by which Hashem created the universe. To use vulgar rude profanity in order to express offensive words for a variety of purposes including to demonstrate disrespect or negativity, to relieve or express anger surprise or pain is acting like a goy. A Teruah Yid separates himself from herd conformity of the Gentile world whose profane usage of language is far from gentle.

In Devarim 4, 9-10 there is a mitzvah to remember the Revelation of Hashem's giving us the Torah. Included in this is the mamad Har Sinai which is all the miraculous occurrences that were present at that time. Part of this is hearing the Teruah sounds that took place and its meaning which must become part of our daily lives. We suggest that this concept is reflected in the words of the passuk above אשרי העם יודעי תרועה . The word יודעי translates as having a deep intimate connection to, as we find this word in the passuk והאדם ידע את חוה אשתו. At Sinai we were chosen from amongst all the nations and we heard the Teruah. It is incumbent on us every day to live the Teruah that was designated and gifted to us.

Bilam said לא הביט און ביעקב לא ראה עמל בישראל ה' אלקיו עמו ותרועת מלך בו

This passuk is relating to the world through their prophet that the essence of a Yid is his neshama נשמה שנתת בי טהורה היא which is called תרועת מלך . Hashem blew ויפח באפיו into Man's body (from the lashon תרועה) a neshamah. This neshama was not defiled by the sin of Adam eating from the Aitz Hadaas. The word תרועה is rooted in the word רע which means friend and connection. A Yid is always bound with Hashem through his neshama which is rooted in the Aitz Hachayim. When Shabbos comes which is also above the Aitz Hadaas טוב ורע, (מהעץ הדעת טוב עה"כ = שבת) the neshama has the power to control the body which is in contrast to the rest of the six days in the week when the body could and does take over the neshamah. (See Sfas Emes Balak תרסג).

דבורך של שבת כדבורך של חול שלא יהא This is the reason why on Shabbos our dibbur must be upgraded – for Shabbos is also the day that Torah was given to Am Yisrael and then we are .יודעי תרועה There are many hinting to this . The word (ויקרא כו לה) בשבתתיכם = תרועת מלך בו. On your Shabasos the presence of the Melech Haolam is felt. The gematriah of כשופר קולך is 762 equals ביום שבת with two words. Shabbos is the time of Matan Torah ושני לוחות אבנים הוריד בידו, time of teruahכשופר קולך that is why the following passuk קרבת אלקים חפציך the word קרבת adds up to .שבת On Shabbos we have כשופר קולך that through the power of teruah dibbur on Shabbos we get closer to Hashem.