12 Timna was concubine to Eliphaz, Esau's son; and she bore to Eliphaz Amalek. These are the sons of Adah, Esau's wife.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Timna was concubine to Eliphaz - As Timna was sister to Lotan the Horite, Genesis 36:22, we see how the family of Esau and the Horites got intermixed. This might give the sons of Esau a pretext to seize the land, and expel the ancient inhabitants, as we find they did, Deuteronomy 2:12.
Amalek - The father of the Amalekites, afterwards bitter enemies to the Jews, and whom God commanded to be entirely exterminated, Deuteronomy 25:17, Deuteronomy 25:19.
And Timna was concubine to Eliphaz, Esau's son,.... She is said to be the sister of Lotan, the eldest son of Seir the Horite, Genesis 36:22; in 1-Chronicles 1:36 mention is made of Timna among the sons of Eliphaz, and of Duke Timnah here, Genesis 36:40; and Gerundinsis (y) is of opinion, that Timnah the concubine of Eliphaz, after she had bore Amalek, conceived and bore another son, and she dying in childbirth, he called it by her name to perpetuate her memory: but Jarchi says, that Eliphaz lay with Lotan's mother, the wife of Seir the Horite, of whom was born Timna, and when she grew up she became his concubine, and so was both his daughter and his concubine:
and she bare to Eliphaz Amalek; from whence the Amalekites sprung, often mentioned in Scripture, whom the Israelites were commanded utterly to destroy, 1-Samuel 15:18,
these were the sons of Adah, Esau's wife; that is, her grandsons.
(y) Apud Menasseh ben Israel, conciliator in Genesis. Quaest. 57. p. 81.
*More commentary available at chapter level.