im not sure how this fits in here
but
Rabbi Moshe Wolfson, shlita, explains that the first time the Torah uses a word tells us its most fundamental meaning
the first time “kofer” was used was the pitch used to cover Moshes little basket.
he explains when Hashem blew of himself into Adam a deep unchanging and unquestioned Emunah and knowledge of Hashem was implanted.
this is merely “covered up” by the alien ideas around us and by our getting used to all the wonders that occur every moment (as explained in Chovos Ha Levovos)
that is why a kofer is called a kofer. he denies because his innate Emunah is “covered up”, not because he does not believe deep down.
pretty much, something like that.