The term Oeaohoo is found in Book of Dzyan, stanza 3, verses 5 and 7, and stanza 4, verse 4. Despite the wide prevalence of Sanskrit texts on mantras found in India, such a term has so far not been found in any of these texts. Similar vowel terms have, however, been found in Gnostic texts from the Nag Hammadi library, discovered in 1945.

About the term Oeahoo, we read in The Secret Doctrine:

“Let it be understood that the terms Brahma and Parabrahman are not used here because they belong to our Esoteric nomenclature, but simply because they are more familiar to the students in the West. Both are the perfect equivalents of our one, three, and seven vowelled terms, which stand for the One All, and the One “All in all.”” (S.D. vol. 1, p. 20)

“Oeaohoo is rendered “Father-Mother of the Gods” in the Commentaries, or the six in one, or the septenary root from which all proceeds. All depends upon the accent given to these seven vowels, which may be pronounced as one, three, or even seven syllables by adding an e after the letter “o.” This mystic name is given out, because without a thorough mastery of the triple pronunciation it remains for ever ineffectual.” (S.D. vol. 1, p. 68)

Attached are the three relevant Nag Hammadi texts in the two or three published translations (Nag Hammadi, vowel text 1, 1977, Nag Hammadi, vowel text 1, 1987, Nag Hammadi, vowel text 1, 2007, Nag Hammadi, vowel text 2, 1977, Nag Hammadi, vowel text 2, 2007, Nag Hammadi, vowel text 3, 1977, Nag Hammadi, vowel text 3, 2007). These are:

1. The Holy Book of the Great Invisible Spirit (earlier titled: The Gospel of the Egyptians).

2. The Discourse on the Eighth and Ninth.

3. Marsanes.

The references are:

The Nag Hammadi Library in English, 1977, pp. 197, 204, 294, 296, 421, 422.

The Nag Hammadi Scriptures, 2007, pp. 255, 267, 415, 417-418, 642, 643.

The Gnostic Scriptures, 1987, pp. 107, 118.