'Nations' in the Bible

“I will display My glory among the nations, and all the nations will see the judgment I have executed and the hand I have laid on them.

And the nations will know that the house of Israel went into exile on account of their iniquity, because they dealt unfaithfully with Me. Therefore, I hid My face from them and handed them over to their enemies, so that they all fell by the sword.

When I have brought them again from the people, and gathered them out of their enemies' lands, and am sanctified in them in the sight of many nations;

They will know that I am Yahweh their God when I regather them to their own land after having exiled them among the nations. I will leave none of them behind.