1 Chronicles 1:28 (BSB)

The sons of Abraham were Isaac and Ishmael.

From 1 Chronicles 1. Also in the ESV.

Commentary on 1 Chronicles 1:28

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 1 Chronicles 1:28-54: All nations but the seed of Abraham are already shaken off from this genealogy: they have no part nor lot in this matter. The Lord's portion is his people. Of them he keeps an account, knows them by name; but those who are strangers to him he beholds afar off.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 1 Chronicles 1:28: The sons of Abraham,.... The famous and well known ancestor of the Jews; of Ishmael his firstborn, and his posterity; of his sons by Keturah; and of Isaac and his sons, an account is given from hence to the end of Ch1 1:34 entirely agreeing with that in Gen 25:1. . 1 Chronicles 1:35 ch1 1:35 ch1 1:35 ch1 1:35The sons of Esau,....
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on 1 Chronicles 1:28: 1Ch 1:28 The sons of Abraham. - In 1Ch 1:28 only Isaac and Ishmael are so called; Isaac first, as the son of the promise. Then, in 1Ch 1:29-31, follow the posterity of Ishmael, with the remark that Ishmael was the first-born; in 1Ch 1:32 and 1Ch 1:33, the sons of Keturah; and finally in 1Ch 1:34, the two sons of Isaac.