Parshat Toldos begins with Yitzchak and Rivka, seemingly doomed to replay the tragedy of Avraham and Sarah by being unable to have children. The third pasuk tells us that "Yitzchak entreated G-d for his wife, for she was barren, and G-d accepted his prayer." While the pasuk makes no mention of Rivka praying, commentaries interpret Le'Nochach, a word in the pasuk, as meaning opposite, suggesting that they were both praying. Rashi comments that G-d accepted Yitzchak's prayer, not Rivka's, because he was the son of a tzaddik and she was the daughter of a wicked man. There are however obvious questions to be raised about this, not least of which is that it would imply that Yitzchak's prayers would be more effective than that of his own father's. There are a number of other answers as to why G-d might have listened to Yitzchak's prayer, rather than Rivka's. From a halachic perspective, men, not women, are obligated in the biblical command to have chi...
