(Devarim, 32:13) "He made him ride on the high places of the earth": This is Eretz Yisrael, which is higher than all the lands, as it is written (Bamidbar 13:30) "Let us go up and inherit it," (Ibid. 21) "and they went up and spied out the land," (Ibid. 22) "and they went up in the south."
Why the Land of Israel Is Higher Than All Other Lands
Sifrei Devarim 316:1