@certainly existent,
If you studied Heidegger you might remember his adage "language speaks the man". In other words the language we are born into constructs "one's world", or provides us with ready made selective spectacles. So constructivism is not a matter of inventing neologisms. It is a matter of language constraining cognition (
ref: Sapir-Whorf hypothesis), a point similarly arrived at by Wittgenstein with his: "the limits of my language are the limits of my world".
You keep stressing "rationality" which I take you as
parochially meaning "argument from axioms". But monotheistic religion in its widest sense is anything
but "logical" since its basic premise is the logical paradox of "an uncreated creator". Departing from parochially equating "logicality" with "rationality", we can of course argue that
any religion has its own rational basis, but the plethora of diverse religious beliefs mitigates against selecting any one of them as "superior". In short, religion like cultural and linguistic conditioning, appears to be merely an accident of birth.