Crowley was using the word ABRAHADABRA as a personal cipher for the Great Work before the reception of The Book of the Law. It's inclusion in that book indicated to Crowley that Aiwass was using his own personal occult symbol system to communicate with him.
ABRAHADABRA.
5 A's, the pentalpha = the microcosm. 6 consonants = the macrocosm.
5=6 is the magical grade of Adeptus Minor, one who has attained the Knowledge and Conversation of the Holy Guardian Angel.
5+6 = 11, according to Crowley the number of magick. (Crowley added the K. The 11th letter of the alphabet.)
Abrahadabra = 418. The Hebrew letter Cheth (attributed to the tarot card The Chariot), spelled in full, = 418.
From Crowley's, The Equinox vol.1, no.5:
418 = Ch = 8.
By Aiq Bkr ABRAHADABRA = 1 + 2 + 2 + 1 + 5 + 1 + 4 + 1 + 2 + 2 + 1 = 22.
Also 418 = 22 x 19 Manifestation. Hence the word manifests the 22 Keys of
Rota.
It means by translation Abraha Deber, the Voice of the Chief Seer.
It resolves into Pentagram and Hexagram as follows: --- {116}
A
/ \ [This is by taking the 5 middle letters.]
R-----B
A The pentagram is 12, HVA, Macroprosopus.
/ \
H D The hexagram is 406, AThH, Microprosopus.
\ /
A-A
B---R Thus it connotes the Great Work.
\ /
A Note ABR, initials of the Supernals, Ab, Ben, Ruach.
(2) A [This is by separating the One (Aleph) from the Many
/ \ / \ (diverse letters).]
A A R H "The Vision and the Voice," a
\ / | | BRH = 207, Aur, Light à phrase which meant much
A-A B D DBR = 206, Deber, Voice ³ to me at the moment of dis-
\ / covering this Word.
R
(3) A A
/ \ / \
A A B A
\ / | | [By taking each alternate letter.]
R-B H D
\ /
R
205 = GBR, mighty.
This shows Abrahadabra as
213 = ABIR, mighty.
the Word of Double Power, another phrase that meant much to me at the time.
AAB at the top of the Hexagram gives AB, AIMA, BN, Father, Mother, Child.
HDR by Yetzirah gives Horus, Isis, Osiris, again Father, Mother , Child.
This Hexagram is again the human Triad.
Dividing into 3 and 8 we get the Triangle of Horus dominating the Stooping
Dragon of 8 Heads, the Supernals bursting the Head of Daath.
Also A
/ \ The Supernals are supported upon two squares ---
R---B
A--B A--H ABAD = DD, Love, 8.
| | | |
A--D R--A AHRA = AVR, Light, 207.
Now 8 x 207 = 1656 = ChI, Living, and 207 = 9 x 23, ChIH, Life. At this
time "Licht, Liebe, Leben" was the mystic name of the Mother-Temple of the
G.'. D.'. {117}
The five letters used in the word are A, the Crown; B, the Wand; D, the
Cup; H, the Sword; R, the Rosy Cross; and refer further to Amoun the Father,
Thoth His messenger, and Isis, Horus, Osiris, the divine-human triad.
Also 418 = ATh IAV, the Essence of IAO, q.v.
This short analysis might be indefinitely expanded; but always the symbol
will remain the Expression of the Goal and the Exposition of the Path.