וְאֶת־עֵשָׂ֖ו שָׂנֵ֑אתִי וָאָשִׂ֤ים אֶת־הָרָיו֙ שְׁמָמָ֔ה וְאֶת־נַחֲלָת֖וֹ לְתַנּ֥וֹת מִדְבָּֽר׃
Aber Esau hasste ich und machte seine Berge zu einer Verwüstung und gab sein Erbe den Schakalen der Wüste.
Rashi on Malachi
And I hated Esau to push him off to a land because of Jacob, his brother. Now it is customary in the world that, if one has two sons, he selects a beautiful portion for the firstborn.
Rashi on Malachi
and I made his mountains desolate They do not compare to the mountains of Israel.