Previously I, Jonathan, and Gullotta have solved the perpetual virginity of Mary thing. Before I discuss the brothers of the Lord thing, you make this strange point:
Secondly, you have ignored the passage from John’s Gospel, where Jesus tells the disciple he loved that Mary is now that disciple’s mother! WHY would this be needed IF Jesus’ siblings were around?
Jonathan has answered this as well, it wasn’t needed. It’s just what happened. There’s no particular necessity to have Mary live with this or that brother or this or that disciple. The real question is why couldn’t Mary have been sent to live with a disciple? This objection is useless.
So, the burden of proof is on the historicist to show that only physical relationship is in view and the phrase “Lord’s brother” cannot have any other meaning. (such as a brother in Christ, etc…). 1 Cor. 9: Do we not have a right to take along a believing wife, even as the rest of the apostles and the brothers of the Lord and Cephas?
1 Corinthians 9 clearly supports the regular interpretations, since it draws a distinction between apostles (regular Christians) and the brothers of the Lord, meaning that the brothers of the Lord were not just rank-and-file Christians. Paul calls fellow Christians “brothers” sometimes, but he never calls a regular Christian a “brother of the Lord”, a phrase that only James, out of everyone in Paul’s epistles, is singled out for. Further evidence that James was a brother of Jesus is because our extra-Pauline ancient literature also tell us Jesus had a brother named James, including both the Gospels of Mark (6:3) and Matthew (13:55-56), as well as the first century Jewish historian Josephus (Antiquities of the Jews XX.9.1), not to mention the probably authentic James ossuary also dating to the 1st century. James was clearly widely known in the 1st century as an actual, familial brother of Jesus, and so there’s no reason to assume Paul is doing otherwise when he singles James out as the “brother of the Lord”.
Furthermore, Gullotta makes another convincing argument as to why James should be understood as an actual brother. In Galatians 2, Paul tells us that James is one of the pillars of the church, alongside Peter and John, and we’re told that James “had people” who represented him in cities like Antioch. If James had no familial ties with Jesus, how did he gain such prominence and power? He was not one of the twelve disciples (unlike Peter and John), and his Christophany was rather late. Indeed, how could James gain such power in the early church by any means besides an actual familial relationship with Jesus? And since he was in fact so powerful, how on Earth could one claim that the “brother of the Lord” is a phrase for a rank-and-file Christian? It CAN’T mean that, considering James was anything but a rank-and-file Christian. Carrier solves this by claiming the James of Galatians 1 is different from the James of Galatians 2, which has to be the most strained reading of Galatians 1-2 I’ve ever heard and can be dismissed as an absurdity that Carrier confected to maintain mythicism.
In conclusion, there is actually considerable evidence that James really was the brother of the Lord. The widespread tradition in 1st century Christianity that Jesus had a familial brother named James, Paul only singles James out as the brother of the Lord in his epistles, and there is no logical explanation for the prominence of James in the first century church besides him having a familial relationship with Jesus (and in fact, he was so prominent that “brother of the Lord” simply can not be a phrase for a rank-and-file Christian, since it applied to someone like James).