Комментарий к Берешит 10:7

AND THE SONS OF CUSH: SEBA AND HAVILAH, ETC. These sons became the heads of nations, and the two sons of Raamah [namely, Sheba and Dedan] became two nations. Nimrod the son of Cush, however, did not become the head of a nation. Therefore, Scripture wrote afterward, And Cush begot Nimrod,²⁷¹Verse 8. and did not say, “and the sons of Cush: Nimrod, and Seba, and Havilah” [which would have indicated that Nimrod, like Seba and Havilah, also became the head of a nation]. But Phut the son of Ham²⁷²Verse 6. became only one people, and not various nations as was the case with Mitzraim²⁷³Verses 13-14. and Canaan,²⁷⁴Verses 15-18. the sons of Ham.²⁷²Verse 6. Therefore, Scripture did not return [to tell of the progeny of Phut, as it did with the other sons of Ham, namely, Cush, Mitzraim and Canaan]. In Bereshith Rabbah we find:²⁷⁵37:2. “Said Resh Lakish, ‘We might have thought that the family of Phut was swallowed up, but Ezekiel came and explained, Phut, and Lud, and all the Arabians,’”²⁷⁶Ezekiel 30:5. The meaning of the Midrash is that because Scripture did not return to tell about Phut, we might have thought that his seed intermingled with the children of Canaan and they neither became a nation, nor did they inherit a land called by their name. [The prophet Ezekiel thus clarified that the children of Phut existed as a separate nation in their own land.] However, in the case of Magog, and Madai…and Tubal, and Meshech, and Tiras,²⁷⁷Verse 2. — the children of Japheth — Scripture also did not mention the families of their progeny: And so also with the sons of Shem: Elam, and Asshur, and Arpachshad,²⁷⁸“Arpachshad.” In this case Scripture does record his progeny (Verses 24-29). The Tur in quoting the language of Ramban rightly omits Arpachshad. Neither is it found in Ramban Mss. and Lud,²⁷⁹Verse 22. who became heads of nations; Scripture did not mention their progeny since each one just became one people inhabiting one country, and they did not give rise to various nationalities.

ובני כוש סבא וחוילה, each one of these sons became a nation in its own right. This was in addition to those of his sons who continued to bear their founding father’s name. (compare Isaiah 43,3)

ובני...ודדן, Rav Saadyah gaon has supplied us with a commentary on all these.

ובני כוש סבא וחוילה “and the sons of Cush, Seva and Chavila.” All of thee people named here became founders of different clans which developed into nations. The sons of Raamah developed into two distinct nations, this is why their father’s name was repeated. On the other hand, Nimrod did not develop into being founder of a nation. We know this because the Torah describes his exploits in a different manner in verse 9. We would have expected the Torah to write: ובני כוש נמרד, following the pattern established since the beginning of the chapter. Put did not found a separate nation. This is why his name does not appear again after verse 6. All the ones whose children are not mentioned by name founded nations.