Genesis 28:6

ESAU MARRIES A DAUGHTER OF ISHMAEL.

(6) When Esau. — The solemn transfer of the birthright to Jacob, and Isaac’s complete assent thereto, must have been the cause of no little grief to Esau, and evidently it made him feel that he had greatly contributed to this result by his own illegitimate marriages. When, then, he sees Jacob sent away to obtain a wife, in accordance with the rule established by Abraham, he determines also to conform to it, and marries a daughter of Ishmael. She is called Bashe-math in chap 36:3, and described in both places as “the sister of Nebajoth,” in order to show that as Nebajoth “the firstborn” (Genesis 25:13) was undoubtedly the son of Ishmael by his first wife, “whom Hagar took for him out of the land of Egypt” (Genesis 21:21), so also Mahalath shared in this precedence, and was not the daughter of any of Ishmael’s subsequent wives, or of a concubine.