Many good things on this thread.
An easy way to explain this to a literalist is:
Did the Holy Spirit ever overshadow Mary AGAIN? (No).
So He had no brothers or sisters.
Half-brothers and Half-sisters? Maybe not even that. Though such could be older siblings of Joseph (through a previous marriage in which he was later a widower) – in which case Mary and her virginity are not involved. Yet even that is not clarified.
Often the argument is made in opposition to the Church teaching on Mary’s perpetual virginity. And so, half-brothers and sisters from Joseph and a previous marriage would be unsatisfactory for expanding the deduction “he had brothers and sisters … so Mary must not be a virgin then.”
The imprecise language confutes the argument. A full brother would be divine with the same two parents … and no one argues that.
Beyond literalism the word “brother” takes on meanings further away than even “close relative” at times. In English it was common in the black community to call everyone ethnically connected as “brother” or “sister” for example. And a “brother” Galilean or a “brother” Judean or Levite or Nazarene might be meant too. But more likely cousin or
perhaps people who lived beneath the same roof as Jesus after Joseph died.
I think I’ll stop the speculating and possibility tally here.
Though the “cousins” or relatives argument seems plausible in that one of the two Jameses who were apostles was called “brother of the Lord” by Paul. One James was the son of Zebedee,and Solome who asked Jesus to let her sons James and John sit on his right hand and his left when He established His kingdom. The other James was called the son of Alpheus or James the less whose mother’s name was Mary but thought by some to be the one of the other women at the cross when Jesus was crucified.
Also … the Church was THERE in its apostles, and not much is made of any “brothers or sisters” of Jesus regarding any new Davidic dynasty according to the flesh … which probably would have come up as people embraced Jesus as the Messiah.
Mary’s being a perpetual virgin really bothers some people. And Joseph being a chaste protector (to some) taxes their imagination past its limits. So far has sex been elevated to
idol status.
I heard an interesting reflection on Mary being like (and greater to) the Holy Ark of the Covenant recently. And John’s visions of the Tabernacle in Heaven being opened in
Revelation 11 and a vision of the woman clothed in the sun with stars about her head and the moon at her feet.
No one would put profane things (even an Israealite battle flag) into the Ark of the Covenant … it was too holy. Neither would Christians bury another person in the Holy Sepulchre after Jesus rose. Mary’s body was considered as utterly holy too. Even more so.
Her proximity to these other relatives in this Gospel passage is about all it proves.
The controversy tends to take one’s eyes off Jesus and onto … the controversy.
But the controversy serves as “a reason” to not be one with Catholics in bringing
Christianity together as Christ prayed for.
The Catholic Church must do its part to try to unify Christianity too. Teaching things
that aren’t true cannot be part of that though. So don’t look for the Catholic Church
to teach any “much less than perpetual virginity” of Mary theories as doctrine.