'Nations' in the Bible

The vision of Obadiah.Thus says the Lord God concerning Edom—We have heard a report from the Lord,And an envoy has been sent among the nations saying,“Arise and let us go against her for battle”—

“Behold, I will make you small among the nations;You are greatly despised.

“For the day of the Lord draws near on all the nations.As you have done, it will be done to you.Your dealings will return on your own head.

“Because just as you drank on My holy mountain,All the nations will drink continually.They will drink and swallowAnd become as if they had never existed.