Is Bas Kol the heavenly voice always correct and how to identify Bas Kol from whispering coming from demons or evil spirits? I hear many Rabbonim have heard contradictory Bas kol so what is the criteria for judging a Bas Kol, whether its divine or evil?

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    One of the most famous stories about a bas kol is about how halacha was decided against it. – J. C. Salomon Nov 19 '14 at 13:24
  • IIRC, there is no Jewish source for the satan having any power to cause misleading prophecy. (The spirit of Navos was allowed to mislead Achav’s prophets, but that was a special case, and not the satan.) – J. C. Salomon Nov 19 '14 at 13:28
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    This question would be greatly improved if you could source the idea that "many Rabbonim have heard contradictory Bas kol" and that Judaism recognizes something called "satanic whispering". – Yishai Nov 19 '14 at 13:49
  • Megillah 32a – Double AA Nov 19 '14 at 15:46
  • @J.C.Salomon that story is also one of the motivation behind the question, as how can one be sure that it is a heavenly voice? only because some sage says so? cant the sages be tested\deceived? – narnia Nov 19 '14 at 15:54

The Bas Kol could be correct, but it nevertheless lacks the authority to, for example, override a decision of the rabbis. In Bava Metzia 59b, Rabbi Eliezer was trying to prove a point of halacha and attempted to invoke miracles to prove he was correct on that point. The rabbis said that miracles prove nothing. Then, to prove his point, R. Eliezer called on a Bas Kol which declared that he was right. But R. Joshua arose and exclaimed: ‘It is not in heaven’ (quoting Deut. 30:12). Rabbi Jeremiah explained that the verse cited means that since the Torah had already been given to us at Mount Sinai; we pay no attention to a Heavenly Voice, because the halacha is that a majority of the rabbis only determines matters in dispute. When Rabbi Natan met Eliyahu HaNavi he asked what G-d's response was and He said, ‘My sons have defeated Me, My sons have defeated Me.’

  • How absurd that sounds, considering the fact that Bas Kohl is a heavenly word hence wont speak of things in violation of Torah, Rabbis on the other hand are fallible mortal beings uncomparable to Bas Kol. And this statement is a clear heresy: " Torah had already been given to us at Mount Sinai; we pay no attention to a Heavenly Voice" So if a prophet arrives in all high probability he would be rejected Alas by the rabbinim. – narnia Nov 19 '14 at 19:53
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    @narnia What's heresy? Halakha is a human system, not a divine one. – Charles Koppelman Nov 19 '14 at 20:31
  • @Charles, can you elaborate on that – Clint Eastwood Nov 19 '14 at 20:33
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    @narnia, See judaism.stackexchange.com/q/26425/2, and note that Judaism's epistomological assumptions may not be the same as yours. – Isaac Moses Nov 19 '14 at 20:51
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    @Gary. Prophecy, after Moshe, did not reveal new laws. Sometimes a prophet confirmed a teaching from the Oral tradition re specifics as to how to perform mitzvos; but no new laws were transmitted by G-d via prophets. – Bruce James Nov 20 '14 at 10:02

Shaarei kedusha part 3 gate 8

When the (Ruach) will dwell on him, he should check that perhaps he is not yet pure and clean and this Ruach is from the "other side" (side of evil), or at the least a mixture of good and evil. And the story of Ben Azai and Ben Zoma (mishnaic sages) who ascended to Pardes is proof. This one can discern through what is revealed to him. If all his words are true or truth and falsehood mixed together, or if his words are Devarim Betalim (useless talk) of matters of this world, or things which are not in line with torah, or the like. Because then, one must push it away from oneself, and also to strengthen more and more in his service until all his things are faithful and with fear of heaven, etc.

And know that in the beginning the Ruach will settle on a man in infrequent intervals. And also they will be simple things which are not deep, and also his words will be few. As time goes by, strengthen yourself in all the details we specified.

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