The Tetragrammaton is the holy "four-lettered name" of God.
The Tetragrammaton, or four-lettered Name of God, is here arranged as a tetractys within the inverted human heart. Beneath, the name Jehovah is shown transformed into Jehoshua by the interpolation of the radiant Hebrew letter סה, Shin.
TETRAGRAMMATON. (The invocation contained on fol. 52b * might be read in conjunction with this term.) ...
As Tetragrammaton is the Name of Deity in four letters, Pentagrammaton is the Name expressed in five. Y.H.V.H. plus Shin (Spirit of the Primal Fire = 300, you may wish to check further correspondences) is written Y.H.Sh.V.H.
The Tetragrammaton is thought by Jews to represent the very essence of the Godhead. To identify the World of Adam Kadmon with the Tetragrammaton therefore is like saying that it represents or expresses the essence of the Godhead.
The Tetragrammaton, or the four-lettered Name of God, written thus יהוה, is pronounce Jehovah.
The sephirot also comprise the sacred, unknowable, and unspeakable personal name of God: YHVH (Yahweh), the Tetragrammaton. So sacred is the Tetragrammaton that other names, such as Elohim and Jehovah, are substituted in its place in scripture.
Groups of four come in many forms: the four Tarot suits. the four horsemen of the apocalypse, the four Evangelists, the four cardinal virtues, the four letters of God's name "the Tetragrammaton.
Tyson, Donald, "Tetragrammaton"
Vinci, Leo, "GMICALZOMA, an Enochian Dictionary" ...
My best guess is that the letters are supposed to show the tetragrammaton forward and backward: YHVHHVHY.
Semiforas of Adam in wch be conteyned 4 chapters
The first is when Adam spake wth the creator in paradice.
User:Richardshusr/Transcriptions of the Tetragrammaton
Jewish Encyclopedia: Tetragrammaton
Cornwell: Alpha & Omega: Names of God
The Meaning of the Tetragrammaton
Yahweh's name in the Dead Sea Scrolls
Jeff Spiegel: Names of God ...
and wilt not appear unto me to answer unto such things as I would have desired of thee, or would have been satisfied in; I do in the name, and by the power and dignity of the Omnipresent and Immortal Lord God of Hosts IEHOVAH TETRAGRAMMATON, ...
Each of the components of the Tetragrammaton, that is, consonants, has its mystical significance and connotation explained.
The Kabbalists also used gematria to search for the holy names of God thinking, as so many others have, that these names such as the Tetragrammaton possessed power. Such a procedure has been adopted by many present day magicians.
ENQUIRER. How about those Kabalists, who, while being such, still believe in Jehovah, or the Tetragrammaton?
* The three fiery astrological signs of Leo, Aries & Sagittarius
* The element of fire
* The career aspect of our daily lives
* The letter Yod (Primal Energy) of the Tetragrammaton ...
the letters, or their practical application in magic, whereas Bardon, in his third book, "The Key To The True Kabbalah" has given us a very full explanation with instructions for using the tetrapolar magnet, or YHVH also known as the "Tetragrammaton".
In terms of kabala itself, technical words such as Macroprosopos (the Vast Countenance), Microprosopos (the Lesser Countenance) and Tetragrammaton (the Four-lettered Name of God), are Greek. So are the names of the archangels Metatron and Sandalphon.
See also: World, Spirit, Magic, Light, Ritual