Kommentar zu Bereschit 17:6

ונתתיך לגוים AND I WILL MAKE NATIONS OF THEE — Israel and Edom only are intended here for Ishmael was already born to him and He could not, therefore, have been making any announcement concerning him.

AND I WILL MAKE NATIONS OF THEE. The language of Rashi: “Israel and Edom are referred to here, for Ishmael was already born to him, and He could not therefore have been making any announcement concerning him.”
But in my opinion it is not correct that He should inform him of Esau at the time of the covenant of circumcision since Esau does not observe circumcision and has not been commanded thereon, as the Sages expounded in Tractate Sanhedrin:⁴⁰²59b. “For in Isaac shall seed be called to thee,⁴⁰³Further, 21:12. but not all of Isaac.”⁴⁰⁴Not all of the children of Isaac, namely Jacob and Esau, but only “in” Isaac, meaning only one, Jacob. Instead, [the proper interpretation is that] Israel alone is called “nations” and “peoples,” as in the verses: Yea, He loveth the peoples;⁴⁰⁵Deuteronomy 33:3. They shall call peoples unto the mountains;⁴⁰⁶Ibid., Verse 19. After thee, Benjamin, among the peoples.⁴⁰⁷Judges 5:14. Even after the birth of all the tribes, He said: A nation and a company of nations shall be of thee;⁴⁰⁸Further, 35:11. And I will make of thee a company of peoples.⁴⁰⁹Ibid., 48:4.

והפרתי אותך במאד מאד ונתתיך לגוים, as we already explained, this refers to Yitzchok, Ishmael and the sons of Keturah. Alternatively, it refers only to Yitzchok's offspring Yaakov, and his offspring alone. The meaning of the word גוים then would be "tribes" as suggested by Onkelos. [in a different manuscript from that copied in our Chumashim. Ed.]