וַיְהִ֤י עֵשָׂו֙ בֶּן־אַרְבָּעִ֣ים שָׁנָ֔ה וַיִּקַּ֤ח אִשָּׁה֙ אֶת־יְהוּדִ֔ית בַּת־בְּאֵרִ֖י הַֽחִתִּ֑י וְאֶת־בָּ֣שְׂמַ֔ת בַּת־אֵילֹ֖ן הַֽחִתִּֽי׃
And when Esau was forty years old, he took to wife Judith the daughter of Beeri the Hittite, and Basemath the daughter of Elon the Hittite.
Read kabbalistic (mystical) interpretation of Genesis 26:34: and classical mystical sources.