"ki be'Rish'as ha'Goyim ha'heim Hashem Elokecha Morisham mi'Pnecha" implies that, had they no been wicked Hashem woul not have destroyed them from the land. What would then have happened to the Hashem's promise to the Avos?
R. Bachye: Had the Cana'ani nations been worthy, Hashem, to Whom the whole world belongs, would have found another land to give them. 1
Like He gave Africa to the Girgashi who fled before Yisrael.
"es ha'Davar asher Nishba Hashem la'Avosecha". What is 'the matter' to which the Pasuk is referring?
Ramban: It is referring to the promise that Hashem made to Avraham at the B'ris bein ha'Besarim 1 - "Ki Ger Yih'yeh Zar'acha be'Eretz Lo lahem ... ve'Dor Revi'i Yashuvu Heinah" (' ... that your offspring will be strangers in a land that is not theirs ... and the fourth generation will return here').
In Lech L'cha Bereishis, 15:16.
What is the gist of this Pasuk, which seems to be merely a repetition of the previous one?
Seforno: What the Torah is now saying is that a. it is not on the merit of Yisrael that Hashem miraculously delivered the Cana'anim into our hands, rather, due to their sins, they deserved to suffer defeat at our hands 1 and not at His, and b. that we should earn the right to inherit the land by carrying out the fulfillment of Hashem's promise to the Avos. 2
Seforno: As David ha'Melech said in Shmuel 2, 24:14 "Niplah Na be'Yad Hashem, u've'Yad Adam Al Epolah!"
Seforno: In similar fashion to what Hashem said to Yeihu ben Nimshi in Melachim 2, 10:30, after he destroyed the house of Ach'av.
