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 Gen. Quaest. 57. p. 81.

And Timna was concubine to Eliphaz Esau's son; and she bare to Eliphaz Amalek: these were the sons of Adah Esau's wife.

Margin Amalek

See Scofield Note: "Ex 17:8".

36:1-43 Esau and his descendants. - The registers in this chapter show the faithfulness of God to his promise to Abraham. Esau is here called Edom, that name which kept up the remembrance of his selling his birth-right for a mess of pottage. Esau continued the same profane despiser of heavenly things. In outward prosperity and honour, the children of the covenant are often behind, and those that are out of the covenant get the start. We may suppose it a trial to the faith of God's Israel, to hear of the pomp and power of the kings of Edom, while they were bond-slaves in Egypt; but those that look for great things from God, must be content to wait for them; God's time is the best time. Mount Seir is called the land of their possession. Canaan was at this time only the land of promise. Seir was in the possession of the Edomites. The children of this world have their all in hand, and nothing in hope, Lu 16:25; while the children of God have their all in hope, and next to nothing in hand. But, all things considered, it is beyond compare better to have Canaan in promise, than mount Seir in possession.