IHVH
Yod He Vau He
The four-letter name; the translations write “the LORD”.
Liber O spells it letter by letter, I H V H, and tells the reader to pronounce it “Ye-ho-wau”. The Golden Dawn's text has the four letters' names vibrated instead. The disagreement is set out with the pentagram ritual.
Where the spelling and meaning come from (2)
Hebrew: יהוה canonical
The Masoretic text writes the four consonants with the vowels of Adonai, as a sign that Adonai is read in its place.
יְהֹוָ֞ה אֱלֹהֵ֣י אֲבֹתֵיכֶ֗ם … זֶה־שְּׁמִ֣י לְעֹלָ֔ם
The LORD, the God of your fathers … this is My name for ever, and this is My memorial unto all generations.
Meaning: The personal name of the God of Israel, read aloud as Adonai traditional
the so-called Tetragrammaton, Yhwh, the distinctive personal name of the God of Israel
when the Tetragram became too holy for utterance Adonai was substituted for it