All religions believe in original sin. Most adherents of any non-Christian religion will deny this, but they’re just confused. Not having a word for it does not mean you don’t believe in it.
In Christianity it’s easy to find the concept of original sin because they have a word for it, but you’ll find the exact same topic in Judaism, Islam, Hinduism and even Buddhism. They can’t use the expression ‘original sin’ and are still in search of the concept, so their discussions on it are more complex and obfuscated, but they’re very aware of the subject, just like Christians. I’ve always thought that the best proof for the existence of original sin is anti-semitism.
It was already there in antiquity, when people thought Jews were ‘weird’. One reason. A silly reason because as we all know everybody was weird in antiquity. Then came Christianity, thought up by a Jew, preached by Jews, but when it came to power it became anti-semitic. Jews had killed Our Saviour. Another reason. A silly reason because we all know it was the Romans, it says so in the gospels (yeah, but weren’t those written by Jews?). It took a while before Christians started to realize they really shouldn’t be anti-semites and that process was still going on when another type of anti-semitism took over: social Darwinism. Jews were considered a ‘race’ not well adapted to whatever it was they had to be adapted too. Yet another reason. A silly reason because we all know Jews are genetically indistinguishable from –dare I say it- ‘other humans’. It wasn’t long before someone had thought up the idea that the fittest for survival were the ‘Arians’ whose task it was to help natural selection a bit. Christians were still in the process of slowly realizing they really shouldn’t be anti-semites when all of a sudden social Darwinism created its ultimate consequence: the Endlösung. Now that we’ve realized we shouldn’t be anti-semites, even when we’re not Christians, the Islamic world is taking over. Now it’s the state of Israel, the ‘Zionist Entity’ that makes people recycle the Protocols of the Elders of Sion and loads of other crap. Again another reason. A silly reason because we all know Israel and Judaism are not the same thing, and neither are Arabs and Islam, nor (geo)politics and faith.
Anti-Semitism has been a constant ever since antiquity, the only variables are the reasons behind it. They keep changing. They don’t matter, just as long as they’re there to back it up. Anti-semitism isn’t there for a reason: it’s there because people want to be anti-semites.
Now it seems anti-semitism has even spread to the victims. I’m not making this up: here someone’s moderately worried about it. Someone who also doesn’t have a word for ‘original sin’, but who knows he’s dealing with it.