Unfortunately, I do understand Preterism, which is clearly outside the pale of logic as the problem with saying that there is no Jew nor Greek and no male nor female.
No, my friend, you do not understand it. Not if this is one of your go-to verses.
Here is the "no male or female" passage in context (one of several similar passages):
For ye are all the children of God by faith in Christ Jesus. For as many of you as have been baptized into Christ have put on Christ. There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. - Galatians 3:26-28
Paul is speaking here of wall of division having come down (betweens Jews and Gentiles) and also that, as Christians we are all unified. Male and female distinctions meant a lot in the Old Covenant. You even see some of it in the transition period of the New Testament.
Along these same lines is 2 Cor. 5;16:
"Wherefore henceforth know we no man after the flesh: yea, though we have known Christ after the flesh, yet now henceforth know we him no more."