"Cautionary tale? Perhaps. Would Christianity/Judaism/Islam/Buddhism/Sikhism/etc survive such an alien encountered unchanged/unscathed? I personally doubt it."

"Cautionary tale? Perhaps. Would Christianity/Judaism/Islam/Buddhism/Sikhism/etc survive such an alien encountered unchanged/unscathed? I personally doubt it." Not sure about the rest, but pretty sure Buddhism would remain mostly unchanged. It assumes a myriad of different beings living all over the universe and in different planes of existence.