'Nations' in the Bible

For all the nations of the world seek after these [things], and your Father knows that you need these [things].

and they will fall by the edge of the sword, and will be led captive into all the nations, and Jerusalem will be trampled down by the Gentiles until the times of the Gentiles are fulfilled.

"And there will be signs in the sun and moon and stars, and on the earth distress of nations in perplexity from the noise of the sea and [its] surging,

and repentance and the forgiveness of sins would be proclaimed in his name to all the nations, beginning from Jerusalem.