as far as the “all’’ , I was going to interject except for Christ , but was hoping it was not necessary, for Writ is specific enough, even by the same author, that Christ was sinless…it would also make it nonsensical for paul to say we are then made righteous by a sinner as Christ (in the verse that follows all are sinners”), not too mention how could God (Jesus) be short of His own glory ?
No, the best response (Catholic) to this is that Mary was simply made righteous by the same Christ that we are, just that it was done at inception. One reason that it was not necessary (IC) is that then “untainted” Mary was conceived in a tainted body , that is, her mother.
yes, we rely on church teachings, just that I would not consider the IC a foundational teaching, and that only until recently , one could believe the opposite and still honor Mary , and the church, and be in good standing.
As far as the latter. Mark tells us that His ministry grew, so much so that the crowd wouldn’t let Him eat. His friends were concerned (though they did not “believe”), and later we see the brethren (who also did not believe) with Mary (who believed and pondered) who "desired’’ to see him. I don’t think they desired insight to his parables, but perhaps were concerned for him physically (not eating would worry any good mother ?). Unlike Cana, no info is given on any acquiescing, save a teaching moment as to reality of a spiritual family/relations. While worrying can be a sin, i would more suredly say this episode simply makes Mary so much more like all of us in our growing in understanding , our need to “ponder” just whom Jesus is.
To your post.