I keep forgetting your theory of how sin is transmitted. Sorry. I really had never heard it before, so it's taking a while to sink in.
Well, it is clear you haven't been reading your Aquinas!
I posted what he said on this subject sometime back, so you can look it up.
The sin is transmitted by the male, hence the need of a virgin birth, without the seed of a human male.
The immaculate conception is a greater miracle than that of the virgin birth since Mary would have to been conceived without sin even though she was conceived of the seed of Adam (her human father).
Why do you think a virgin birth was important?
It was to make sure that Christ wasn't tainted by original sin that comes from the male.
A little study would clear up the confusion, but since the Roman Catholic Church has declared that Mary was born with an immaculate conception, why would you actually study the issue.
Just believe any fable that your church feeds you.
You said (with emphasis added, of course) in post 921
Then you said (I cehcked it was you or someone using your 'handle') in the post to which this is a reply:
I never brought up the issue of the Lord correcting anyone.
You conjectured that I was putting up a straw man when I denied that we claim that Mary is the firstborn of Creation. You said then
I do not know what Protestant made such a claim, but it sounds like you are putting up a straw man argument.
So I showed you where it had been alleged by a Protestant that we make that claim.
That's enough. I have nothing further to say to you. Have a blessed evening, but please excuse me from any further discussion.