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It is a FACT that in one survey done on evolution 45% of believers said it was the cause of them DISBELIEVING and leaving the Christian faith. St Paul knew what he was talking about.
I don't know about studies on defections, but I do know of several people who lost the Faith and they told me that it was because of evolution that they lost it.
As holy as St. Pius X was, he did allow a study to be conducted in Rome (as I recall it was the Biblical Commission of 1909) to consider the possibility that evolution was not contradictory to Scripture, specifically. I have always thought it was odd, though, that they did not equally consider the Sacred Tradition of the Church along with Scripture, as has always been the way the Church conducts such research and analysis -- unless perhaps I didn't quite understand their reasoning. They pretty much left the question open, and after that, Liberals went hog-wild with their creepy theories. The principle promoter in the Church of the lies was Pierre Teilhard de Chardin. There was enough latent resistance to his putrid antics that he was (at first) denied Christian burial.
Today there are large swaths of NovusOrdo Catholics who believe that the Catholic understanding of creation is not at odds with so-called evolution, saying nonsense like Adam and Eve had "evolved" from lower forms and God just breathed an immortal soul into their already-existing animal bodies. Any child can explain how that doesn't square with Genesis. But Modernists do not have the faith of a child, which is why they can't go to heaven. They'll go to the other place, instead, as they wish.
The bottom line is that Freemasons have promoted so-called evolution with their agenda of getting Catholics acclimated to their false doctrine that we are 'evolving' to become
gods, kind of like the Mormons believe, in their damned error (which is a false religion founded by Freemasons).
It seems to me that one of the signs that the True Faith will have returned to the Church will be when so-called evolution is sliced, diced and hung out to dry like Pope St. Pius X did with Modernism (
Pascendi, mostly, but also other docuмents).
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