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8
votes
3answers
2k views

Rainbow as a bad omen

There is a popular idea that seeing a rainbow is a bad sign, as if the world is deserving of a deluge (c"v) and the only reason Hashem does not do so is because of His promise. Is there any source for ...
15
votes
4answers
531 views

What is the source of the Magen Dovid (Star of David)?

What is the source of the Magen Dovid (Star of David) in Rabbinic Judaism? When was it first used, and for what?
10
votes
2answers
648 views

Is hamsa allowed?

Does the Halacha allow the use of a hamsa as a good luck charm, considering that it originated as a Muslim symbol?