Tanach · Rishonim on Tanach · Ramban · Torah
Ramban on Genesis 25:30/רמב"ן על בראשית כ״ה:ל׳
אמִן הָאָדֹם הָאָדֹם הַזֶּה הָיָה הַתַּבְשִׁיל מְאָדָּם מִן הָעֲדָשִׁים שֶׁהָיוּ אֲדֻמּוֹת, אוֹ שֶׁרְקָחוֹ בִּדְבָרִים אֲדֻמִּים, וְעֵשָׂו לֹא יָדַע מָה הוּא וְקָרָא שְׁמוֹ אָדֹם, עַל כֵּן קָרָא שְׁמוֹ אֱדוֹם, כִּי לָעֲגוּ עָלָיו שֶׁמָּכַר בְּכוֹרָה נִכְבֶּדֶת בַּעֲבוּר תַּבְשִׁיל מְעַט, "כִּי סֹבֵא וְזוֹלֵל יִוָּרֵשׁ" (משלי כג כא):
1OF THIS RED, RED POTTAGE. The dish was either reddened by the lentils which were red, or it had been compounded with some red substance, and Esau, not knowing what it was, called it edom (red). Therefore was his name called Edom since they mocked at him for having sold an honorable birthright for a small dish. For the drunkard and the glutton shall come to poverty.39