“Recent discoveries made by great mathematicians and Kabbalists thus prove, beyond shadow of a doubt, that every theology, from the earliest and oldest down to the latest, has sprung not only from a common source of abstract beliefs, but from one universal esoteric, or “Mystery” language.
These scholars hold the key to the universal language of old, and have turned it successfully, though only once, in the hermetically closed door leading to the Hall of Mysteries.
The great archaic system known from prehistoric ages as the sacred Wisdom Science, one that is contained and can be traced in every old as well as in every new religion, had, and still has, its universal language – the language of the Hierophants – which was seven “dialects”, so to speak, each referring, and being specially appropriated, to one of the seven mysteries of Nature.
Each had its own symbolism. Nature could thus be either read in its fullness, or viewed from one of its special aspects.
The proof of this lies, to this day, in the extreme difficulty which the Orientalists in general, the Indologists and Egyptologists especially, experience in interpreting the allegorical writings of the Aryans and the hieratic records of old Egypt.
This is because they will never remember that all the ancient records were written in a language which was universal and known to all nations alike in days of old, but which is now intelligible only to the few.
Like the Arabic figures which are plain to a man of whatever nation, or like the English word ‘and’, which becomes ‘et’ for the French, ‘und’ for the German, and so on, yet which may be expressed for all civilized nations in the simple sign ‘&’ – so all the words of that mystery language signified the same thing to each person of whatever nationality.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 