At the end of Toldot, a parashah that deals almost entirely with the contrast and struggle between Ya'akov and Esav, there comes a peculiar comment by Rashi. When Yitzchak sent Yaakov to find a wife, the Torah tells us that he sent him "to Lavan, son of Betuel and brother of Rivka, the mother of Yaakov and Esav." Now don't we know who Rivka is by this point? Her birth and lineage are heralded at the end of Parashat Vayera, and the Torah has spent the last few chapters speaking extensively of her central role in the emerging struggle between Ya'akov and Esav. Why, then, is the Torah telling us that she is the mother of Yaakov and Esav?! Rash, also, seems dumbfounded. He says simply "I don't know what this teaching us". But with so much to say about Ya'acov and Esav, and all the many levels of the delineations which they symbolize - Malchut Hashem vs. Malchut dSitra Achra, Olam Hazeh vs. Olam Haba, a society of holiness vs a society based on wasteful consumption to name a few - can it really be that Rashi hasn't a clue what this seemingly extraneous statement come to teach.
But perhaps Rashi is telling us the deepest secret. After all the delineations and disjunctions, the Torah feels it necessary to tell us that, at the end of the day, Rivka is the mother of Yaakov AND Esav. They have the same mother, they come from the same root. How can this be? Rashi tells us: " 'I don't know what!' this is teaching us." Somehow, after all the struggle, all the pain, six million revisits to the Akeida - it's all Purim. Astrologically, the 2000 years we've spent in the Roman (= Edom=Esav) exile are all ruled by the sign of Pisces, which is ADAR! The whole thing is Purim and all the delineations and divisions are just a puppet show Hashem is putting on for us, and we're the puppets. "I don't know what!" Baruch Mordechai , Arur Haman - who can tell the difference? Regardless of who got which beracha etc, oneness penetrates Yaakov and Esav - indeed, ultimately, it characterizes them, and Rivka wants both of them in the world. Rashi is teaching us about Purim, the holiday of the end of days, when the kiss of reunification of Ya'acov and Esav (Parashat Vayishlach will no longer be blemished by suspended dots), and Rivka Imeinu will truly be the mother of twins…