Edom (Heb.). Edomite Kings. A deeply concealed mystery is to he found in the allegory of the seven Kings of Edorn, who “reigned in the land of Edom before there reigned any King over the children of Israel”. (Gen. xxxvi. 31.) The Kabbala teaches that this Kingdom was one of “unbalanced forces’ and necessarily of unstable character. The world of Israel is a type of the condition of the worlds which came into existence subsequently to the later period when the equilibrium had become established. [ w.w. w.]
On the other hand the Eastern Esoteric philosophy teaches that the seven Kings of Edom are not the type of perished worlds or unbalanced forces, but the symbol of the seven human Root-races, four of which have passed away, the fifth is passing, and two are still to come. Though in the language of esoteric blinds, the hint in St. John’s Revelation is clear enough when it states in chapter xvii , 10: “And there are seven Kings; five are fallen, and one (the fifth, still) is, and the other (the sixth Root- race) is not yet come Had all the seven Kings of Edom perished as worlds of “unbalanced forces”, how could the fifth still be, and the other or others “not yet come” ? In The Kabbalah Unveiled, we read on page 48, “ The seven Kings had died and their possessions had been broken up”, and a footnote emphasizes the statement by saying, “these seven Kings are the Edomite Kings”.
Source: H.P.Blavatsky - The Theosophical Glossary