Genesis 36:16
Duke Korah, duke Gatam, and duke Amalek: these are the dukes that came of Eliphaz in the land of Edom; these were the sons of Adah.
Cross-reference
Exodus 15:15
Contrast
Exodus 15:15 later depicts the 'chiefs of Edom' trembling—a stark reversal from their listed power in this genealogy.
Exodus 17:8
Historical context
Amalek is named as a clan chief here, whose descendants later attack Israel at Rephidim in Exodus 17:8, fulfilling ancestral rivalry.