These are their genealogies: Nebaioth the firstborn of Ishmael, then Kedar, Adbeel, Mibsam,
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.
Commenting on 1 Chronicles 1:28-54
SONS OF ISHMAEL. (Ch1 1:29-31) These are their generations--the heads of his twelve tribes. The great northern desert of Arabia, including the entire neck, was colonized by these tribes; and if we can recover, in the modern geography of this part of the country, Arab tribes bearing the names of those patriarchs, that is, names corresponding with those preserved in the original catalogue of Scripture...
1Ch 1:29-33 The names of the generations (תּולדות) of Ishmael (Hebr. Yishma'el) correspond to those in Gen 25:12-15, and have been there explained. In 1Ch 1:32. also, the names of the thirteen descendants of Abraham by Keturah, six sons and seven grandsons, agree with Gen 25:1-4 (see commentary on that passage); only the tribes mentioned in Gen 25:3, which were descended from Dedan the grandson of Keturah, are omitted.
Commenting on 1 Chronicles 1:29-33