“When Esau was forty years old, he married Judith daughter of Beeri the Hittite, and Basemath the daughter of Elon the Hittite. They made life bitter for Isaac and Rebekah.”
When Esau was 40 years old he married Judith, the daughter of Beeri, and Basemath, the daughter of Elon, both were Hittites. Judith was also the name of the Book of Judith, found in the Septuagint only. There is no further mention of this Judith when the list of wives of Esau appears later. Beeri was also the name of the father of Hosea the prophet. Basemath is mentioned more often than Judith. Elon was a common name and the name of a place. These two wives made life ‘bitter’ for Isaac and Rebekah, with no mention of why. Perhaps the Hittites apparently were not too friendly.
Eugene Finnegan Bible Project 