Gender is an old phenomenon. In the beginning God the Father and the Holy Spirit conceived and begat the Son. God the father is the male parent analogue. The Holy Spirit is the female parent analogue.
Gender is a Temporal Phenomenon
Physical Separation
God intends to bring about a permanent physical separation of light from darkness. Light weight and light bearing are synonyms, like dark and heavy are. In general heavier, denser materials are darker.
A Plan for Particle Physics
There's a school of thought that the creation we live in was made from the remnants of an earlier one. In this narrative Genesis 1:1 describes a creation which was destroyed before the creative process begins in Genesis 1:2.
Ex Nihilo vs. Ex Abyssi
The writer of Hebrews describes the creation of the universe as thermodynamically balanced. Apparently God created the universe from things which are invisible. We (that's me and the Holy spirit) propose atoms and molecules.
Why Have You Forsaken Me?
Light and darkness have to be separated because the manifestation of free will is only possible by combining them.
From the Sixth Hour to the Ninth Hour
Another picture that we have which is part of the symbolism of Christ on the cross is that darkness came upon the world in the middle of the day. Things on Earth are patterned after things in the heavens.
Darkness on the face of the Deep
The nature of free will is such that an individual can choose light or darkness. How can there be free will unless a choice is available? The Lord had to create a universe in which darkness exists.
A Theory of First Cause
First cause isn't the same as the Big Bang. The Big Bang, or more accurately we should say nucleosynthesis, is an effect, not a cause. Popular Science (SciPop) promotes speculation about a possible first cause.
Childbirth
The idea of Christ being begotten in an act of conception is carried forward with the analogy of the labor of childbirth. As such, the Son was brought forth as if a baby was being born.
Light = Good; Darkness = Evil
The parallels between light and good vs. darkness and evil are stated throughout scripture. Isaiah laments people who try to make you believe that good is evil and evil is good, and who put darkness for light.