Really? Where is that verse that identifies someone other than Jesus as Mary's son or daughter?
It’s right in the Bible ... :-) ...
Matthew 13 ...
54 And when He had come to His own country, He taught them in their synagogue, so that they were astonished and said, “Where did this Man get this wisdom and these mighty works?
55 Is this not the carpenter’s son? Is not His mother called Mary? And His brothers James, Joses, Simon, and Judas?
56 And His sisters, are they not all with us? Where then did this Man get all these things?”
57 So they were offended at Him. But Jesus said to them, “A prophet is not without honor except in his own country and in his own house.”
58 Now He did not do many mighty works there because of their unbelief.
NOTICE that Jesus didn’t say, “Look, you guys can’t even get it right that there were no brothers or sisters in my house and my mother never had any other kids. If you can’t get that right, right in the middle of YOUR OWN TOWN, what makes you think you can get anything else right?”
LOL ...