'Nations' in the Bible

Now if thou shalt kill this people as one man, then the nations which have heard the fame of thee will speak, saying,

For from the top of the rocks I see him, And from the hills I behold him: lo, it is a people that dwelleth alone, And shall not be reckoned among the nations.

God bringeth him forth out of Egypt; He hath as it were the strength of the wild-ox: He shall eat up the nations his adversaries, And shall break their bones in pieces, And smite them through with his arrows.

And he looked on Amalek, and took up his parable, and said, Amalek was the first of the nations; But his latter end shall come to destruction.