Adelphos for "cousin" & "nephew" in the LXX; kecharitomene; Joseph & Mary's abstinence; prototokos; Jesus alone is called Mary's "son" Steve Reply to Baptist Steve Christie, covering arguments for and against Mary's perpetual virginity, such as, e.g., the fact that no one but Jesus is called Mary's son.
Including a "New" Argument from How Jesus is Described in Relation to Mary and Joseph This is a follow-up to my article, Dialogue w a Protestant on Mary’s Continued defense of Mary’s perpetual virginity, including examining more closely the second century witness of Hegesippus for Simon being Jesus' cousin.
Lucas Banzoli is a very active Brazilian theological writer, who denies that Jesus is immutable in His Divine Nature (i.e., judging by the standard of Josephus uses "adelphos" [lit., "brother"] many times in a sense other than "sibling." Thus, his meaning when he refers to James, the "brother of Jesus" isn't certain.