'Nations' in the Bible

"And who is like your people, like Israel, the one nation on earth that God went out to redeem as a people for himself, to make a name for himself, and to carry out for them great and awe-inspiring accomplishments, driving out nations and their gods in front of your people, whom you redeemed to yourself from Egypt?

and King David dedicated them to the LORD, along with the silver and gold that had been dedicated from all the nations that he had conquered,

You delivered me from civil war among my own people. You preserved me as head of the nations. People whom I had never known served me!

Because of all of this I will praise you among the nations, LORD, and I will sing praises to your name!