'Mightier' in the Bible

"When Yahweh your God brings you into the land that you [are] about to enter {into it} to take possession of it, and he drives out many nations {before you}, the Hittites and the Girgashites and the Amorites and the Canaanites and the Hivites and the Jebusites, seven nations mightier and more numerous than you,

Leave me alone, and let me destroy them, and let me blot out their name from under heaven, and let me make you into a nation mightier and more numerous than they!'