Social psychologist Diarmuid O’Murchu suggests that Plato and Aristotle are primarily responsible for our binary view of gender and the idea that gender and sexuality are “biologically ingrained, and determined by God, the creator of the natural order.” Over the next few days, I’ll summarize some of O’Murchu’s helpful insights from his recent book, Incarnation: A New Evolutionary Threshold.
O’Murchu outlines the “norms” with which we are all no doubt familiar:
Men are supposed to be rational, assertive, tough, and focused on material success; women are supposed to be more emotional, modest, tender, and concerned with a nurturing quality of life. According to that same philosophy, the male is superior in strength, wisdom and fertility; the woman provides the passive, receptive incubator to fertilize the male seed and assure the continuance of the human race. 
This was not always the case. Many ancient peoples treated men and women in a much more egalitarian way. Our current binary roles can be traced back to the Agricultural Revolution. These gender stereotypes are socially constructed behaviors and attributes that differ by culture, rather than absolute truths or tenets of the Judeo-Christian tradition.  Many cultures identify a third or even fourth gender. The Bible often refers to “eunuchs” (see Isaiah 56:4-5 and Matthew 19:12, for instance) which may or may not have included people that today might identify as transgender, bisexual, intersex, gay, or lesbian.
.. In spiritual terms, gender is an attribute of the “false” or passing self, and is thus not one’s essential identity in God. The “True Self” or “Anchored Self” is beyond gender, which is probably the point Jesus is making when he says in heaven there is no marriage or giving in marriage (Luke 20:35).