'Nations' in the Bible

For all these things the nations of the world eagerly seek; but 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 under foot by the Gentiles until the times of the Gentiles are fulfilled.

“There will be signs in sun and moon and stars, and on the earth dismay among nations, in perplexity at the roaring of the sea and the waves,

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