I was looking at the Emerald Tablets and saw a reference to the reptilians, the ancient usurpers of man's dominion over the world.  This was fair proof of their existence, though I'd already knew they've been around a long time.

Far in the past before Atlantis existed,
men there were who delved into darkness,
using dark magic, calling up beings
from the great deep below us.
Forth came they into this cycle.
Formless were they of another vibration,
existing unseen by the children of earth-men.
Only through blood could they have formed being.
Only through man could they live in the world.

In ages past were they conquered by Masters,
driven below to the place whence they came.
But some there were who remained,
hidden in spaces and planes unknown to man.
Lived they in Atlantis as shadows,
but at times they appeared among men.
Aye, when the blood was offered,
for they came they to dwell among men.

In the form of man they amongst us,
but only to sight were they as are men.
Serpent-headed when the glamour was lifted
but appearing to man as men among men.
Crept they into the Councils,
taking forms that were like unto men.
Slaying by their arts 
the chiefs of the kingdoms,
taking their form and ruling o'er man.
Only by magic could they be discovered.
Only by sound could their faces be seen.
Sought they from the Kingdom of shadows
to destroy man and rule in his place.

But, know ye, the Masters were mighty in magic,
able to lift the Veil from the face of the serpent,
able to send him back to his place.
Came they to man and taught him the secret,
the WORD that only a man can pronounce.
Swift then they lifted the Veil from the serpent
and cast him forth from the place among men.

Yet, beware, the serpent still liveth
in a place that is open at times to the world.
Unseen they walk among thee
in places where the rites have been said.
Again as time passes onward
shall they take the semblance of men.

Called may they be by the master
who knows the white or the black,
but only the white master may control
and bind them while in the flesh.

Seek not the kingdom of shadows,
for evil will surely appear.
For only the master of brightness 
shall conquer the shadow of fear.

Know ye, O my brother,
that fear is an obstacle great.
Be master of all in the brightness,
the shadow will soon disappear.
Hear ye and heed my wisdom,
the voice of LIGHT is clear.
Seek not the valley of shadow,
and LIGHT will only appear.

      I'm looking for references to "the Word" that the tablets speak of.  Any clues?