'Nations' in the Bible

We have heard a report from the Lord. An envoy was sent among the nations, saying, "Arise! Let us make war against Edom!"

"For the day of the Lord is approaching for all the nations! Just as you have done, so it will be done to you. You will get exactly what your deeds deserve.

For just as you have drunk on my holy mountain, so all the nations will drink continually. They will drink, and they will gulp down; they will be as though they had never been.