Satanus, I think it's telling that the tetragrammaton is never used in the Divine Luturgy.
Regarding your question:
"In Western magic, "Tetragrammaton" is the holiest name of God. It is composed of the four Hebrew letters YHVH and is the occult key that unlocks the meaning behind astrological symbolism, the tarot, the mysteries of the Old Testament and the Book of Revelation, the kabbalah, the Enochian magick of John Dee, and modern ritual magic. It may be considered the archetypal blueprint of creation, the basis for such fundamental forms as DNA double helix and the binary language of modern computers. Its true structure is the arcanum of occultism." — Tetragrammaton: The Secret to Evoking Angelic Powers and the Key to the Apocalypse (Llewellyn's High Magick Series)
Counterpoint
2008 “Letter to the Bishops Conferences on The Name of God,”
"When in fact St. Paul, with regard to the crucifixion, writes that “God has highly exalted him and bestowed on him the name which is above every name” (Phil 2:9), he does not mean any name other than “Lord,” for he continues by saying, “and every tongue confess that Jesus Christ is Lord” (Phil 2:11; cf. Is 42:8: “I am the Lord; that is my name.”) The attribution of this title to the risen Christ corresponds exactly to the proclamation of his divinity. The title in fact becomes interchangeable between the God of Israel and the Messiah of the Christian faith, even though it is not in fact one of the titles used for the Messiah of Israel. In the strictly theological sense, this title is found, for example, already in the first canonical Gospel (cf. Mt 1:20: “The angel of the Lord appeared to Joseph in a dream.”) One sees it as a rule in Old Testament citations in the New Testament (cf. Acts 2:20): “The sun shall be turned into darkness. . . before the day of the Lord comes” (Joel 3:4); 1 Peter 1:25: “The word of the Lord abides for ever” (Is 40:8). However, in the properly Christological sense, apart from the text cited of Philippians 2:9-11, one can remember Romans 10:9 (“If you confess with your lips that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved”), 1 Corinthians 2:8 (“they would not have crucified the Lord of glory”), 1 Corinthians 12:3 (“No one can say 'Jesus is Lord' except by the Holy Spirit”) and the frequent formula concerning the Christian who lives “in the Lord” (Rom 16:2; 1 Cor 7:22, 1 Thes 3:8; etc)."
The idea that Hebrew is divine or Holy is preposterous and can only be from the occult. For one thing, God's intention was ALWAYS universal, not confined just to a small group of people. Furthermore, God used the Greek language to bring the world the Good News. If there was an declaration by God of the insignificance of the Hebrew language, that was it.
Hebraism is Illuminism, in that the elite create a power structure based on the initiate's required acquisition of Hebraic (language) knowledge, among other things.