Here’s the old Catholic Encyclopedia:
“The term conception does not mean the active or generative conception by her parents. Her body was formed in the womb of the mother, and the father had the usual share in its formation. The question does not concern the immaculateness of the generative activity of her parents. Neither does it concern the passive conception absolutely and simply (conceptio seminis carnis, inchoata), which, according to the order of nature, precedes the infusion of the rational soul. The person is truly conceived when the soul is created and infused into the body. Mary was preserved exempt from all stain of original sin at the first moment of her animation, and sanctifying was given to her before sin could have taken effect in her soul.”
It is strange that
Ineffabilis Deus does not say this, then, but whatever…not my doctrine to begin with. I will say that all of this fretting over when the person is ‘truly conceived’ is an odd conceit. If we do not worry about this (as I haven’t found it in St. Cyril, St. Athanasius, etc.; any of the saints that we get really ‘core’ doctrinal concepts from, I mean), it doesn’t seem necessary, or to put it another way: It seems like it is the result of uniquely Latin speculation, just as others in this thread have put it. It seems like a wannabe dogma in search of a rationalization, rather than a heresy in need of refutation (in sharp contrast with where Orthodox doctrine comes from).
Here’s the authoritative statement from Pope Alexander VII back in the 17th century:
“Antigua es la piedad de los fieles cristianos para con la Santísima Virgen María, que sienten en su alma, que en el primer instante de su creación e infusión en el cuerpo, fue preservada inmune de la mancha del pecado original, por singular gracia y privilegio de Dios, en atención a los méritos de su Hijo Jesucristo…”
Why is this in Spanish?

Was Pope Alexander VII Hispanic? Wikipedia says he was born in Tuscany.
As you can see, the decree of Pope Alexander VII is almost exactly identical to the wording of the dogma of the IC, except on its more explicit teaching that the doctrine of the IC refers to the spiritual conception (when the soul of Mary was created and infused into her body) - not the physical conception - of Mary.
What I actually see in the above (as a person who was raised speaking this language) is a statement is about what the Pope claims is the ancient belief of the Christian faithful. I don’t really see anything that actually substantiates the IC…probably because it wasn’t the ancient belief of Christians. You said it yourself in the following portion of your reply (original emphasis removed; new emphasis added):
This is because during the time of Pope Alexander VII, the matter of when the body is animated (i.e., the spiritual conception/ when the soul is created and infused into the body by God) was still debated. By the time that the dogma of the IC was promulgated, almost 200 years later, it was already generally settled and held that spiritual conception (i.e., the soul is created and infused into the body by God) occurs at the same exact instance as the physical conception (by the parents).
The IC was invented to answer a controversy that existed in the Latin world at that time. Outside of that context, it is unnecessary, yet the Vatican drug it out of the medieval Latin monastery, for some reason that I (and many others) can’t possibly begin to fathom. You certainly don’t find this controversy in early Church writings on the Theotokos, such as those of St. Cyril, St. Ephrem, St. Epiphanus of Salamis (according to HH Abune Paulos, Patriarch of the EOTC, one of the earliest writers to consider with depth the mortality of the Theotokos), etc. The question of
when the soul of the Theotokos was created and infused did not concern them, nor does it concern us, nor should it concern anybody. It’s absolutely irrelevant outside of the context in which the medieval Latins, basing their speculations on Augustine, whipped themselves into a frenzy over nothing.
Thanks for the question. What brother Fonebone means (and he can corroborate or deny this, but I’m pretty sure he will corroborate it) is that “Original Sin” has a more general meaning than “stain of original Sin.” The stain of Original Sin exclusively refers to one of the consequences of the Original Sin committed by Adam and Eve - namely, the consequence of spiritual separation from God.
If we consider the consequences of sin to be death (and the Holy Scriptures certainly do, quite explicitly, so I hope you do, too), then it is absolutely incorrect to say that the Theotokos was born without the “stain of original sin”, if that’s what this means. The Theotokos was just like we are! She was not some other kind of thing. So I’m going to have to retract my earlier openness to this idea that we might have common ground on this issue.
The documents of Trent specifically refers to this stain (i.e., the spiritual separation from God) as the condition that is corrected or removed by Baptism. In distinction, “Original Sin” can refer to the consequences of the Original Sin of Adam and Eve, and when it does so, it is inclusive of ALL the consequences of Original Sin, including mortality and corruption (which would be equivalent in your understanding as the inheritance of the fallen human nature), and can also refer to the original act that is the sin of Adam/ Eve.
Alright… :compcoff: And the Roman Pope can renounce his throne and his current faith and live out the rest of his days at Deir el-Baramous, or call upon the college of cardinals to create the world’s most aged and holy basketball team. You’re not telling me much, but I suspect that’s not your fault.