Esoterically, as well as exoterically, all the above enumerated Creations stand for the (7) periods of Evolution, whether after an “Age” or a “Day” of Brahma. This is the teaching par excellence of Occult Philosophy, which, however, never uses the term “creation,” nor even that of evolution, “with regard to primary ‘Creation’:” but calls all such forces “the aspects of the Causeless Force.” In the Bible the seven periods are dwarfed into the six days of creation and the seventh day of rest, and the Westerns adhere to the letter. In the Hindu philosophy, when the active Creator has produced the world of gods, the germs of all the undifferentiated elements and the rudiments of future senses (the world of noumena, in short), the Universe remains unaltered for a “Day of Brahma,” a period of 4,320,000,000 years. This is the seventh passive period or the “Sabbath day” of Eastern philosophy, that follows six periods of active evolution. In the Satapatha Brahmana “Brahma” (neuter), the absolute Cause of all Causes, radiates the gods. Having radiated the gods (through its inherent nature) the work is interrupted. In the 1st Book of Manu it is said, “At the expiration of each night (pralaya) Brahma, having been asleep, awakes, and, through the sole energy of the motion, CAUSES to emanate from itself the spirit, which in its essence is, and yet is not.”
In the Sepher Jezirah, the Kabalistic Book of Creation, the author has evidently repeated the words of Manu. In it the Divine Substance is represented as having alone existed from the eternity, boundless and absolute; and as having emitted from itself the Spirit. “One is the Spirit of the living God, blessed be his Name, who liveth for ever! Voice, Spirit, and Word, this is the Holy Spirit.” (Sepher Jezireh, chap. 1, Mishna IX.) And this is the Kabalistic abstract Trinity, so unceremoniously anthropomorphized by the Fathers. From this triple ONE emanated the whole Kosmos. First from ONE emanated number TWO, or Air, the creative element; and then number THREE, Water, proceeded from the air; Ether or Fire complete the mystic four, the Arba-il. (Ibid.) In the Eastern doctrine Fire is the first Element — Ether, synthesizing the whole (since it contains all of them).
– Helena Petrovna Blavatsky. The Secret Doctrine