The Principle of Gender (see Lesson I. and other lessons to follow) is manifested on all planes of life, material, mental and spiritual. But, as we have said before, "Gender" does not mean "Sex" — sex is merely a material manifestation of gender. "Gender" means "relating to generation or creation." And wherever anything is generated or created, on any plane, the Principle of Gender must be manifested. And this is true even in the creation of Universes.
From ch 5:
a) reactor (living) within generator (dying)
b) jew and gentile aka You and Generation.
c) creationism is suggested; transmutation is perceivable.
Generation causes self differentiation (sex; seco; to divide) aka from generating flow (inception towards death) into reacting form (life).