According to the Protestant assertion that Mary had other sons, He did. For at His mother’s time of greatest loss and need, and at His (alleged) brothers’ time of greatest loss and need, He tore apart His mother’s family and sent her to live for the rest of her days (“from that hour on”) with an unrelated man. To tear one’s mother away from her surviving family, especially at a time of such loss and pain, is a grevious act of dishonoring. Thus I cannot escape the conclusion that the Protestant belief requires that Jesus sinned from the cross.
But of course, that cannot be.
The conclusion is based on the unspoken & unprovable assumption that what we are told, is all there is to say. There might have been excellent reasons of which we are told nothing, for Jesus to speak and act as He did. The gospels are not a diary, the Evangelists were not ambulance-chasers, & Jesus is not some wretched “celeb” of whose life we know every last detail.
So the conclusion - that Protestant exegesis logically requires Jesus to have sinned as described - does not follow.
If it did, that would in all likelihood have been noticed long ago by Protestant commentators themselves. The picture painted is very affecting - but it goes beyond anything implied by Protestant exegesis, because that picture is not required by Protestant exegesis.
It’s not required - but, it is not implausible either. Jesus does “tear people away”, so far as the text goes, on more than one occasion - so*** if*** He had done so here, that would not have been anything new: it would have been appropriate, in a way; for He called James & John away from their nets & their father; so to have called Mary away from her other sons, *would have *fitted into a pattern; it would have been symmetrical. Jesus in the gospels is a divider of homes, not a champion of domestic stability. But, there is no solid foundation for the idea that He does so here; so the most one can say is, that
if He had done so in this passage,
then that would have been prepared for bye His previous behaviour.
The mother of Jesus and the brother of Jesus is the person who does His Father’s Will - not the person related to Jesus by ties of blood. What Jesus says about this, implies that if he had a mother whose son He was, He must also have had brothers & sisters in exactly the same sense. If He did not, if He really was an only child, then His words on relationship to Him lose something of their meaning.
That He is not shown with siblings as a child, proves nothing - as Catholics are quick to point out when arguing against Protestants. If the argument from silence can be validly used against Sola Scriptura, it can also be used against the perpetual virginity. Certainly there are objections derivable from the NT to the notion that He had siblings - but they are no weightier than objections to the Deity of the Holy Spirit. If the latter is credible, why is the former not credible ? There are objections to both in Scripture & Tradition.