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The Shulchan Aruch (Even Haezer 17) says that, Rabbinically, we are not able to rely on rov (indication based on majority) as proof of a husband’s death so that his wife can remarry. For example, one who was known to have been on a ship that sunk in water "whose ends cannot be seen" and was not found thereafter cannot be presumed dead, even though a majority of people who are in such a situation and are not heard from are dead (see Yevamot 121a). However, it is possible to rely on a siman muvhak (a particularly convincing sign) to permit the wife. For example, if an otherwise unrecognizable body was found on shore near the shipwreck with six fingers on its hand, when the husband had six fingers, we can permit the presumed widow to remarry (Shulchan Aruch ibid. 24). Most contemporary poskim rule that one can rely on identification based on DNA of a deceased who was found, a fact that was used in permitting some of the widows of the Twin Towers.
Regarding determining one’s status as a Jew, it is possible to rely on rov (see Pesachim 3b and Yevamot 47a and Tosafot ad loc.). Thus, by comparison, it is clear that one is allowed to rely on a siman muvhak for determining Jewish status. If it is possible to say that the mtDNA test is a reliable indicator of matrilineal Jewish descent or at least a strong rov, then it would be possible to halachically rely upon it, if the check is done by a reputable genealogical laboratory.
We have been working hard, in partnership with an important beit din in the F.S.U. and with leading scientists, to research the evidence on this matter intensively and responsibly. If we determine that the answer is affirmative, we will call upon leading halachic authorities and the Chief Rabbinate of Israel to call upon the Israeli government to turn the implementation of this research into a national project. As stated, this would be able to help many (from within a group of 300,000 to 500,000) with no other evidence, or at least with some but insufficient, halachically recognized evidence of their Jewishness.
Let us pray that we will be successful in helping in this painful issue.
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Israel and the Nations A Few Minutes & Many Innovative Ideas on Antisemitism & What to do About It
As we approach the High Holidays, this short lecture (18 minutes) deals with the unfortunate situation of how Israel and the Jewish People stand against antisemitism, analyzing its cause according to Rav Kook, and how to deal with the issue pragmatically & via our prayers.
Ha'azinu PURSUIT is PERFECTION
p. Ha'azinu, Shabbat Shuva
Rav Kook deals with the question of the seemingly hopeless nature of Tshuva. For G-d Himself knows that He created us with free will, which inevitably means we will sometimes make mistakes and choose wrong. This can easily be frustrating, freezing us into inaction and ye'ush (loss of hope). If one sins even once, does he chalila have no choice but suicide?! Moreover, our Godly conscience demands justice, righteousness and perfection, but we all know this is impossible, so what's the solution? Rav Kook's innovative thinking, strongly based on chazal (our sages), offers an inciteful and important aspect to this topic, especially this time of year!
Sukkot Bug-Free Sukkah: Essential Halachic and Practical Schach Guide
How to inspect, clean, and store bamboo mats and palm branches to protect your mitzvah and holiday meals.
