Well, SCRIPTURE says Jesus had brothers.
And it uses the word that means *brothers*.
Again, they weren't stupid. They knew the difference and the Holy Spirit used the Greek word for *brother* and *sister* for a reason.
If He meant *relative* there was a perfectly good word for Him to use instead.
No it doesn't. It uses the word that is used for 'brother, 'kinsmen', 'relative' or even 'friend'.
Was Lot the brother of Abraham, or was he his kinsman?
Was Jonathan the brother of David, or was he his friend?