[Edit] 
Nothing is taboo in the sense that it can't be talked about. Judaism has always had a cherished tradition of debate and discussion.
In terms of things that are forbidden: Jews are forbidden to worship anyone or anything but G-d. We are forbidden to worship another human, for example. It is also blasphemy, and thus forbidden, to ever claim that G-d would adopt human form.
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First answer by Jew With A View. Last edit by Jew With A View. Contributor trust: 17 [recommend contributor]. Question popularity: 1 [recommend question]
