“Two nations are in your womb,
Two separate peoples shall issue from your body;
One people shall be mightier than the other,
And the older shall serve the younger.” (24) When her time to give birth was at hand, there were twins in her womb. (25) The first one emerged red, like a hairy mantle all over; so they named him Esau.
(א) ויתרוצצו.... רַבּוֹתֵינוּ דְּרָשׁוּהוּ לְשׁוֹן רִיצָה; כְּשֶׁהָיְתָה עוֹבֶרֶת עַל פִּתְחֵי תּוֹרָה שֶׁל שֵׁם וָעֵבֶר יַעֲקֹב רָץ וּמְפַרְכֵּס לָצֵאת, עוֹבֶרֶת עַל פֶּתַח עֲבוֹדַת אֱלִילִים, עֵשָׂו מְפַרְכֵּס לָצֵאת. דָּבָר אַחֵר מִתְרוֹצְצִים זֶה עִם זֶה וּמְרִיבִים בְּנַחֲלַת שְׁנֵי עוֹלָמוֹת.
Our Rabbis explain that the word ויתרוצצו has the meaning of running, moving quickly: whenever she passed by the doors of the Torah (i. e. the Schools of Shem and Eber) Jacob moved convulsively in his efforts to come to birth, but whenever she passed by the gate of a pagan temple Esau moved convulsively in his efforts to come to birth (Genesis Rabbah 63:6). Another explanation is: they struggled with one another and quarrelled as to how they should divide the two worlds as their inheritance (Yalkut Shimoni on Torah 111:2).
(2) בכרתך THY BIRTHRIGHT — Because the sacrificial service was then carried out by the first-born sons, Jacob said, “This wicked man is unworthy to sacrifice to the Holy One, blessed be He” (Genesis Rabbah 63:13).
