Matthew Henry on Genesis 36:9-19
Observe here, 1. That only the names of Esau's sons and grandsons are recorded, only their names, not their history; for it is the church that Moses preserves the records of, not the record of those that are without. Those elders that lived by faith alone obtained a good report. It is Sion that produces men of renown, not Seir, Psa 87:5. Nor does the genealogy go any further than the third and fourth generation; the very names of all after are buried in oblivion. It is only the pedigree of the Israelites, who were to be the heirs of Canaan, and of whom were to come the promised seed, and the holy seed, that is drawn out to any length, as far as there was occasion for it, even of all the trib…
Read the whole note in the consoleJamieson-Fausset-Brown on Genesis 36:8
Thus dwelt Esau in mount Seir--This was divinely assigned as his possession (Jos 24:4; Deu 2:5).
Adam Clarke on Genesis 36:12
Timna was concubine to Eliphaz - As Timna was sister to Lotan the Horite, Gen 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, Deu 2:12.
Amalek - The father of the Amalekites, afterwards bitter enemies to the Jews, and whom God commanded to be entirely exterminated, Deu 25:17, Deu 25:19.
John Gill on Genesis 36:12
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…