וְרָאוּ֙ כָּל־עַמֵּ֣י הָאָ֔רֶץ כִּ֛י שֵׁ֥ם יְהוָ֖ה נִקְרָ֣א עָלֶ֑יךָ וְיָֽרְא֖וּ מִמֶּֽךָּ׃
E tutti i popoli della terra vedranno che il nome dell'Eterno ti è chiamato; e avranno paura di te.
Zohar
This is the yoke of the commandments, obviously, in the sense that in it all that was created in the heaven and earth - one [reason for this] is what is written "these are the generations of heaven and earth as they were created" (Gen. 2:4) BEHIBARAM - they were created with HEY. And so there are Shabbat and the Holy Days, [when] Binah comes down, which is His hand on Hey, which is the Reign of Heaven [God's] which is the Extra Soul, meaning "carved on the tablets" (Exodus 32:16), the I of the exodus from Egypt (see Exodus 20:2) and the extending of the wings over the daughter, and over those who serve her, and they have rest. And this verse is said regarding the servants of Samae"l and the snake: " And all the peoples of the earth shall see that the Ad-nai’s name is proclaimed over you and they shall stand in fear of you. " (Deut. 28:10) - this is the mark of tefillin and the mark of Shabbat, and the mark of the Holy Days and the mark of the Brit - all [4 marks] are similar [in this].
Reshit Chokhmah
In the Tikkunei Zohar (22nd Tikkun, verse 84) it explains about the importance of one who guards his Brit, which about him is said “And the nations of the world will all see that the name of God [YKVK] is called upon you” (Deuteronomy 28:10), because the name YKVK is imprinted on the Brit, as it says “Mi Yaale Lanu Hashamayma” (who will go upwards to heaven for us; 30:12) which is the acronym of “Milah” (circumcision) and the backronym of YKVK, and all of the prosecutors are afraid of him. It also says: 84. Therefore, one who observes the covenant of circumcision, which is the seal OF THE HOLY ONE, BLESSED BE HE, AS THE NAME SHADAI, death moves away from him, which is the Satan, AND IS the Evil Inclination, AND IS CALLED evil, defiled, northern, the Angel of Death. It will not come close to such a one, and he will not die at his hand.
Zohar
The tenth precept is to put on Tefilin, and to complete himself with the supernal image. As it is written, "And Elohim created man in His own image" (Genesis 1:27). He opened the discussion by saying: "Your head upon you is like the Carmel" (Song of Songs 7:6). This verse has already been explained. Nevertheless, "Your head upon you is like the Carmel" applies to the supernal head - the Tefilin worn on the head of the holy Supernal King Yud Hei Vav Hei that appears in the written letters: Each letter is equivalent to one paragraph. The Holy Name is engraved according to the proper order of the letters. And we have learned that the verse "that you are called by the name of Hashem, and they shall be afraid of you" (Deuteronomy 28:10) refers to the Tefilin of the head, which represent the Holy Name, according to the order of the letters.