by R. Nachman of Breslov
When a person’s communication is complete, that corresponds to the Holy Tongue.
All human languages are incomplete and lack perfection, and are called “barbarous speech” (Isaiah 32:4).
Only the Holy Tongue possesses perfection. And the Holy Tongue is connected to the Sabbath. Thus, our Sages comment on the verse that includes the phrase, “and speak a word” (ibid.), which speaks of the Sabbath, “that a person’s speech on the Sabbath should not be the same as his weekday speech” (Shabbat 113).
Similarly, our sages state that the phrase “Thus shall you bless” (Numbers 6:23) means, “in the Holy Tongue” (Sotah 38). The Holy Tongue incorporates blessing and holiness, due to the fact that it is associated with the Sabbath, which is described as possessing blessing and holiness, as in the verse, “and He blessed … and He sanctified” (Genesis 2:3).
And so by means of the Holy Tongue a person is connected to the Sabbath.
Therefore, by means of perfecting one’s speech, which corresponds to the Holy Tongue, a person draws the joy of the Sabbath to the six days of the week.
The six weekdays are associated with depression, for “the angel Metat rules in the weekdays” (Tikunei Zohar 18, p. 33b), and Metat is a servant, which corresponds to depression.
But the Sabbath corresponds to a son, when “there is rest for those in heaven and those upon the earth.” Then joy is awoken. At that point, all of the commandments that a person performed during the six days of the week are raised and elevated from depression; instead, rest and joy are drawn onto them. This is alluded to by the verse, “A son was born and his name was called Noah, for it was said, ‘This one will comfort us from our deeds and from the weariness of our hands” (Genesis 5:28-29).
That corresponds to the Sabbath, which corresponds to the son, corresponding to Noach, “Rest (i) for those in heaven and those upon the earth” (see Tikun 70 at the end and Zohar Bereishit 58, 59), which comforts and gives joy to everyone instead of depression—thus, “this one will comfort us….”
When a person attains the level of the Holy Tongue, which is connected to the Sabbath, he draws down the holiness and joy of the Sabbath into the six days of the week.
Since the Holy Tongue is connected to the Sabbath, through it the joy of the Sabbath is drawn to the six days of the week. Thus, the verse states, “The Mighty One, God, Hashem, spoke.” The numerical value of this phrase in Hebrew (plus the number of words of which it is composed) is equal to that of the word, simchah, joy. By means of a perfect speech, which is the Holy Tongue, joy is drawn down.
Likutei Moharan II 2:5