τετραγραμμάτων – Greek for ‘four letters’.
A Greek word referring to the Hebrew name of God, the Holy Four-lettered Name יהוה YHVH (Yod He Vau He) often translated as Jehovah, or erroneously as Yahve, Yahweh or Jahve, which is actually the name of a demon although it is spelled the same way. This word has many levels of meaning and application.
In Greek, the Solar Logos, the Ain Soph Aur, is named Christ. Yet, in ancient Egypt, when the initiates addressed Christ, the Ain Soph Aur, they addressed him as RA (Re).
When in ancient Egypt they addressed the three aspects of the first triangle of the Tree of Life, namely, Kether, Chokmah, Binah, the three of them together were called Osiris.
In order to address these four parts together — the Ain Soph Aur or RA plus the three primary forces or the three Sephiroth of the first triangle of the Tree of Life — the ancients of Egypt addressed them as Osiris-Ra. In Greek they called them the Tetragrammaton. Osiris-Ra is precisely the great name that we find in the Book of the Dead. Thus, Osiris-Ra as יהוה refers to Kether, Chokmah, Binah and the Ain Soph Aur as one.