The name Omar appears in Genesis 36:11,15 and 1 Chronicles 1:36 as a son of Eliphaz and grandson of Esau, one of the chiefs (alluphim) of Edom. The name likely derives from the root amar (to speak, say), possibly meaning "eloquent" or "speaker."
The Edomite genealogy in Genesis 36 is often passed over quickly, yet it contains a profound theological statement: God kept His promise to Esau too (Genesis 25:23). Though the covenant lineage ran through Jacob, God's care extended to Esau's descendants. Omar and his brothers became chiefs of a powerful nation — the fulfillment of God's word that Esau would live by the sword and serve his brother but also dwell in a rich land. The specificity of these genealogies demonstrates that God tracks the lives of all peoples, not just His elect nation.