'Mightier' in the Bible

I will smite them with the pestilence, and destroy them, and will make of thee a nation greater and mightier than they.

And now come, I pray thee, curse me this people; for they are mightier than I: perhaps I may be able to smite them, and drive them out of the land; for I know that he whom thou blessest is blessed, and he whom thou cursest is cursed.