What does "Kol Makom Asher Tidroch
Rashi (citing Sifri Devarim 51): Hashem said similarly to Moshe (Devarim 11:24). After you conquer all of Eretz Yisrael, wherever you conquer in Chutz la'Aretz will be yours.
Radak: Once you cross the Yarden, I will give to you power to conquer everything.
Malbim: Hashem told this to Moshe (Devarim 11:24)