According to the Midrash (Genesis Rabbah 60:16), this verse is also the source of the three key mitzvot that are meant to be the specific responsibility of Jewish women:
Family Purity: “You find that as long as Sarah lived, a [Divine] cloud hung over her tent; when she died, that cloud disappeared; but when Rebecca came, it returned.” This may seem like a strange allusion to family purity, which is the euphemism used for the laws pertaining to marital relations, but one of the primary concepts of family purity is that such matters should remain private (clouded).
Challah: “As long as Sarah lived, there was a blessing on her dough (understood to mean that the dough stayed fresh all week).... And so when [Isaac] saw [Rebecca] following in his mother's footsteps, separating her challah in cleanness and handling her dough in cleanness, and ‘Isaac straightway brought her into the tent’” Although anyone may make challah or one may buy challah, the mitzvah of “taking challah” (separating a part of the dough as sacred) has always been viewed as a woman’s mitzvah.
Candle Lighting: “...and the lamp used to burn from the evening of the Shabbat until the evening of the following Sabbath; when she died, these [the cloud, the challah and the lit candles] ceased, but when Rebecca came, they returned.” While it is traditional that the “woman of the house” lights the Shabbat candles, a man may also light Shabbat candles.
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