Obviously, Jesus-kun was the first person to ever suggest that humanity is "all one" and part of a higher order.
It's not like Taoism predated that idea or that the creation stories from Germanic tribes of man and woman being born from the same or intertwined trees existed.
Hell - the idea that man and woman were born as equal counterparts is substantially more advanced, spiritually, than the idea woman was born to satisfy man's desire as he had no proper help-meet (proper being the operating word, apparently there had been some experimenting with the other inhabitants of eden and the results were less than ideal).
If anything, it was the germanic and slavic influence on the encroaching byzantine religion which beat it into the more soft and cuddly Christian spiritualism we know, today - the notion of man and woman being partners under God.
While these concepts were not completely new or unique - the germans and slavs were damned certain to highlight those aspects of the scripture and form their culture around them as the religions shifted around them.
Sheesh, it's like talking to a record player.
What if they don't believe what you have convinced yourself they do?