Mishma, Dumah, Massa, Hadad, Tema,
Israel was the chosen nation, elect in type; no other people in their national capacity held the covenant privilege the Jews held. The Lord knows His own by name, and many good souls outside Abraham's seed surely found favor with Him, but this genealogy traces the one nation incorporated into His peculiar bond. The Ishmaelites get scant notice because they were cast out as children of the bondwoman, and their rejection foreshadowed the unbelieving Jews rejected after.
AI summary
Commenting on 1 Chronicles 1:28-54
Dumah--Dumah and Tema, the great Arab tribes of Beni Teman. Thus this writer [Historical Geography of Arabia] traces the names of all the heads of the twelve tribes of Ishmael as perpetuated in the clans or tribes of the Arabs in the present day.
Ishmael's line follows Genesis exactly; Keturah's descendants are also there, though the chronicler lists only sons and grandsons while Genesis traces further into tribes. He calls Keturah a concubine after Genesis does, which is the proper term. Some think the omission means a corrupted text, but that's wrong: the chronicler simply confined himself to his stated scope.
AI summary
Commenting on 1 Chronicles 1:29-33