“(Stanza IV shows the differentiation of the “Germ” of the Universe into septenary hierarchy of conscious Divine Powers, who are the active manifestations of the One Supreme Energy.)
1. LISTEN, YE SONS OF THE EARTH, TO YOUR INSTRUCTORS, THE SONS OF THE FIRE.
LEARN THERE IS NEITHER FIRST NOR LAST; FOR ALL IS ONE NUMBER, ISSUED FROM NO NUMBER.
“The Sons of Fire” – because they are the first Beings (in the Secret Doctrine they are called “Minds”) evolved from Primordial Fire.
But there are two “Fires” and a distinction is made between them in the Occult teachings.
The first, or the purely Formless and Invisible Fire concealed in the Central Spiritual Sun, is spoken of as “triple” (metaphysically);
while the Fire of the manifested Kosmos is Septenary, throughout both the Universe and our Solar System.
2. LEARN WHAT WE, WHO DESCEND FROM THE PRIMORDIAL SEVEN, WE, WHO ARE BORN FROM THE PRIMORDIAL FLAME, HAVE LEARNED FROM OUR FATHERS.
Latent, during Pralaya, and active, during Manvantara, the “Primordial” proceed from “Father-Mother”;
whereas the other manifested Quaternary and the Seven proceed from the Mother alone.
The first “Primordial” are the highest Beings on the Scale of Existence.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 