Luke 1:34
King James Version
34 Then said Mary unto the angel, How shall this be, seeing I know not a man?
To say this means that Mary would never have sex not only contradicts Scripture, but is guilty of twisting Scriptures and trashing all teh rules of Grammar god gave man to communicate!
Matthew 1:24-25
King James Version
24 Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife:
25 And knew her not till she had brought forth her firstborn son: and he called his name Jesus.
If you were honest with God's word you would see that God revealed that Joseph did not have sex with Mary UNTIL AFTER Jesus was born. That is the normal, common, usual way people would understand this according to grammar God gave us!
but you twist and allegorize scripture not only here but in many other places and fulfill the Words of the Apostle Peter:
2 Peter 3:16
As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.