This is evident in ideas that sex is often seen as merely a temporary and expedient factor of this ephemeral earthly mortal life; and the belief that sexuality and sex differences will be dissolved away in the life to come. The idea is that we will all be a single kind of being; perhaps differing in appearance and individual character - but most Christians (other than Mormons) do Not see men and women as having a different 'role' in Heavenly life.
In this earthly world, there are all kinds of - apparently opposed - ideas of sexuality, which are nonetheless all rooted no deeper then observations regarding human psychology. Human psychology is affected by 'nature and nurture' and also by many other things such as illnesses, toxins, genetic problems (including, I believe, cumulative and cross-generational mutation accumulation), drugs and others.
From a psychological perspective, therefore, many different conclusions can be reached; according to selection of the evidence and prior ideology.
These range from sexuality being a matter of individual choice, and 'therefore' a matter of indifference to the bureaucratic state - to its being a relatively-sharp binary divide, with one sex as superior, and the other sex inferior; when judged by various criteria. For instance women are (on average and when interfering factors are controlled) healthier, live longer, and are more conscientious; while men are stronger, more intelligent and more creative.
But here we come up against the fact that in this mortal life - in this material and entropic world - we are always dealing with change, with 'imperfection' and corruption (leading towards death and material destruction in general). So that we almost never get any clear, coherent and stable answers from analyzing the material appearances of things.
Different attitudes are aware of different sets of data, and the same set of data lead to different conclusions - yet the prior metaphysical assumptions that structure this ephemeral world into data, concepts, and persons are themselves seldom acknowledged or brought to awareness.
This is a particular problem when we are trying to understand ultimate and spiritual matters. Far too often these get mixed up with worldly factors, and worldly expediency, as well as with short term social and personal agendas.
Metaphysics then gets reduced to psychology and social policy.
When this happens, observations are being put before the assumptions that make them possible - which is incoherent, and an error. People then try to generate expedient (and changeable) metaphysical assumptions that seem to sustain whatever it is they want to do, how they want to live, what makes them feel better.
The result is a mess!
At the back of everything, the question towards which other questions lead - is the nature of God the creator, God's relationship with Men, and God's purposes in creation.
If, at the end of the line, God is one; then this implies that unity - i.e. one sex (i.e. no sex) - will be the ideal of theosis.
However things may be in his earthly mortal life; the ideal of Heavenly life will be tending towards the God-like state of no sex differentiation.
And if God is one and a man in His nature, then it follows that men will be ideal, and woman secondary. Our ideals will tend towards the masculine; and the feminine will be judged by masculine criteria.
But if, as I believe, God is ultimately two, a dyad; and if that dyad is a man and a woman - then sex difference and sexuality is irreducible, and ideal.
When one understands that the two-fold division into man and woman goes all the way down, then in an ultimate and eternal sense (not expedient, not temporary, not due to limitations of knowledge nor accidents of entropy) - both man and woman are ideal types, and (again ultimately) the role and behaviour of men and women ought to be regarded in itself, by its own role and criteria.
(It is the primordial love between our Heavenly Parents that began creation. That is, indeed, creation itself.)
If God is a dyad, and if we are children of God; then man and woman are both finally irreducible; and each is incomplete in some ultimate sense.
If God is a dyad; then the closer than men and women come to being like God the creator, then the more important will sexual difference become; until, at some point in divinization, men and women will need to become a dyad - if theosis is to continue towards God-like-ness.
Such matters of ultimate metaphysics do not have any direct 'applications' to mortal life. In other words; we cannot read-off social policy from metaphysics.
On the other hand, some polices are ruled-out by metaphysics - such as the mainstream sexual revolution agenda, and the current gender agenda.
And the metaphysical understanding does dictate that we do not unthinkingly, and in all situations, judge men and women by the same criteria. Men and women are both human, but neither is the totality of human; so there will surely be situations in which we need to regard men and women as different in kind.
And when there is a difference in kind, it is wrong to assume that there is no difference, nor should we assume that both men and women can be evaluated and regulated using the same concepts or mechanisms.
On the contrary, we need to be mindful that men and women are like two separate but intertwined 'species' inhabiting the same niche. While we need to do separate things much of the time and especially at the lower levels of expedient functionality; the more spiritually advanced and ultimate are our considerations - the more aware we need to be that men and women are necessary parts of that harmonious loving creativity of interpersonal interaction which characterizes God's creation as it will be manifested in Heaven.
However we may be forced to manage affairs with expediency in this temporary and corrupt mortal life; we ought, therefore, to strive for an ultimate understanding of the human condition which does not give primacy to either the man's or the woman's perspective; but should recognize that at the highest level there is a genuine and necessary complementarity of the two sexes.