“After a time of rest, say the Buddhists, when a new world becomes self-informed, the astral souls of animals, and of all beings, excepts such as have reached the highest Nirvana; will return on earth again to end their cycles of transformations, and become men in their turn. This stupendous conception, the ancients synthesized for the instruction of the common people, into a single pictorial design – the Zodiac, or celestial belt. Instead of the twelve signs now used, there were originally but ten known to the general public, viz.: Aries, Taurus, Gemini, Cancer, Leo, Virgo-Scorpio, Sagittarius, Capricornus, Aquarius, and Pisces. These were exoteric. But in addition, there were two mystical signs inserted, which none but initiates comprehended, viz.: at the middle or junction-point where now stands Libra, and at the sign now called Scorpio, which follows Virgo. When it was found necessary to make them exoteric, these two secret signs were added under their present appellations as blinds to conceal the true names which gave the key to the whole secret of creation, and divulged the origin of “good and evil”.
The true Sabean astrological doctrine secretly taught that within this double sign was hidden the explanation of the gradual transformation of the world, from its spiritual and subjective, into the “two-sexed” sublunary state. The twelve signs were therefore divided into two groups. The first six were called the ascending, or the line of Macrocosm (the great spiritual world); the last six, the descending line, or the Microcosm (the little secondary world), the mere reflection of the former, so to say. This division was called Ezekiel’s wheel and was completed in the following way: First came the ascending, five signs (euhemerized into patriarchs), Aries, Taurus, Gemini, Cancer, Leo, and the group concluded with Virgo-Scorpio. Then came the turning point, Libra. After which, the first half of the sign Virgo-Scorpio, was duplicated and transferred to lead the lower, or descending group of Microcosm which ran down to Pisces, or Noah (deluge).
To make it clearer, the sign Virgo-Scorpio, which appeared originally thus, 
, became, simply Virgo, and the duplication 
, or Scorpio, was placed between Libra, the seventh sign (which is Enoch, or the angel Metatron, or Mediator between spirit and matter, or God and man). It now became Scorpio (or Cain), which sign, or patriarch led mankind to destruction, according to exoteric theology; but according to the true doctrine of the wisdom-religion, it indicated the degradation of the whole universe in its course of evolution downward from the subjective to the objective.
The sign of Libra is credited as a later invention by the Greeks, but it is not generally stated that those among them who were initiated had only made a change of names conveying the same idea as the secret name to those “who knew”, leaving the masses as unwise as ever. Yet it was a beautiful idea of theirs, this Libra, or the balance, expressing as much as could possibly be done without unveiling the whole and ultimate truth. They intended it to imply that when the course of evolution had taken the worlds to the lowest point of grossness, where the earths and their products were coarsest, and their inhabitants most brutish, the turning-point had been reached – the forces were at an even balance. At the lowest point, the still lingering divine spark of spirit within, began to convey the upward impulse. The scales typified that eternal equilibrium, which is the necessity of a universe of harmony, of exact justice, of the balance of centripetal and centrifugal forces, darkness and light, spirit, and matter.
These additional signs of the Zodiac warrant us in saying that the Book of Genesis as we now find it, must be of later date than the invention of Libra by the Greeks; for we find the chapters of the genealogies remodeled to fit the new Zodiac, instead of the latter being made to correspond with the list of patriarchs. And it is this addition and the necessity of concealing the true key, that led the Rabbinical compilers to repeat the names of Enoch and Lamech twice, as we see them now in the Kenite table. Alone, among all the books of the Bible, Genesis belongs to an immense antiquity. The others are all later additions, the earliest of which appeared with Hilkiah, who evidently concocted it with the help of Huddah, the prophetess.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 