Its a three fold duality with oneness as well as well as being three. This threefold personality consisting of two is one entity. There is no such thing as one entity that is the total oneness of male and female. It simply doesnt work that way.
Male and female are manifest duality, necessary in this place...
Some here have said "angels" are male and female, perhaps they think spirits are as well. It is my understanding, if we wish to discuss in a Christian setting, that soul is individual and spirit is one - there is only ever the Holy Spirit, is there anything about others? All of the apostles are taking on the same Holy Spirit, are they now? All humans are to accept the Holy Spirit, is it not true of the Bible?
Father and Son represents a duality, the Manifest and Unmanifest, Holy Spirit is the transcendence of all dualities and is already present in each of us - although you will now know it unless you experience the Baptism by Fire of Jesus - this is the experience of the unity of life directly.
I can tell you that male and female is certainly not relevant in that experience, nothing of the body is relevant at all - you understand completely that you were never the body. You will have to drop the identification with male and female utterly, but it goes deep, in our society we train males and females to be a certain way that has nothing to do with the sexual apparatus. In the experience, there is a culmination of both male and female - both are within - but to arrive there it is my experience that first you must drop the identification with either.
Again I quote Jesus (according to Thomas):
Jesus said to them: when you make the two one,
and when you make the inner as the outer
and the outer as the inner, and the above as the below, and
When you make the male and the female into a single one,
so that the male will not be male and the female not be female,
then shall you enter the kingdom.
Christianity is a belief system, it is full of many nonsenses, but there is a truth that Jesus points to... find that and stop trusting in these men whose job is to fool you - the priests, the popes, etc. If you find truth for yourself, if all of their congregation finds truth, from where will they make their money? They have nothing else, no other skills...