>> The Catholic church claims it wrote the Bible. then it’s not unreasonable to expect there to be Scriptural support for the belief that Mary was sinless and always virgin. <<
It does. “Hail Mary, ‘Ketocharitoomene’.” Funny thing is, Protestant lexicons nearly universally lie and cut that down to merely, “charitoo.” “Ketocharitoomene” means “having been filled (completely) with grace.” Not something one would say to one who is still living under sentence of condemnation to Hell.
>> Is there something about *all have sinned* that is too hard for Catholics to understand? <<
Go back to the original article and read Charles Spurgeon’s commentary on the use of the word translated as “all.”
>> *original sin*. Another Catholic construct. <<
Well, yes, ALL true Christian doctrine is Catholic. But in this case, it is a constrict shared by Calvinist, Lutheran AND Anglican protestant traditions.
Being full of grace does not mean sinless perfection.
How did God keep her from inheriting sin through her sinful parents?
If Jesus couldn’t be carried in a sinful vessel and remain sinless while He was God Incarnate, then how could Mary be kept from sin being carried in a sinful vessel (her mother) being a mere human being?
If God could keep Mary from sin, without her mother being sinless, He could have kept Jesus from sin without His mother being sinless, (presuming of course, that sin is transmitted by physical contact.)