Genesis 36:4 (BSB)

And Adah bore Eliphaz to Esau, Basemath gave birth to Reuel,

From Genesis 36. Also in the ESV.

Commentary on Genesis 36:4

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Genesis 36:1-8: Observe here, 1. Concerning Esau himself, Gen 36:1. He is called Edom (and again, Gen 36:8), that name by which was perpetuated the remembrance of the foolish bargain he made, when he sold his birthright for that red, that red pottage. The very mention of that name is enough to intimate the reason why his family is turned off with such a short account.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Genesis 36:4: And Aholibamah bare Jeush, and Jaalam, and Korah,.... In this genealogy mention is made of another Korah among the sons of Eliphaz, Gen 36:16; which Jarchi thinks is the same with this, and takes him to be a bastard, and begotten in incest by Eliphaz, on his father's wife Aholibamah; but Aben Ezra observes, that some are of opinion that there were two Korahs, one...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Genesis 36:1-8: Gen 36:1-8 Esau’s Wives and Children. His Settlement in the Mountains of Seir. - In the heading (Gen 36:1) the surname Edom is added to the name Esau, which he received at his birth, because the former became the national designation of his descendants. - Gen 36:2, Gen 36:3.