"It would be as impossible for me to attack Christianity as it would be impossible for me to attack werewolves." — Georg Brandes
Georg Brandes is considered one of the giants of Danish literature. Since we're not exactly up on our 19th century Scandinavian fare, we assume there was a lot of gloom. It's Danish literature. We wouldn't expect anything else.
In any case, Brandes, an atheist Jew, was as much a philosopher as he was a writer. And he was not exactly a fan of Christianity, as evidenced by the opening quote. That being said... werewolves?
When we think of goyim, do we think of moon-controlled monsters filled with ravenous rage? (Let's not answer that.) No, with apologies to Brandes, if we were to pick a supernatural creature to compare Christianity to, there is one obvious choice:
Zombies.