'Nations' in the Bible

King David dedicated these things to the Lord, along with the dedicated silver and gold that he had taken from all the nations that he had subdued,

You rescue me from a hostile army; you preserve me as a leader of nations; people over whom I had no authority are now my subjects.

The one true God completely vindicates me; he makes nations submit to me.

So I will give you thanks, O Lord, before the nations! I will sing praises to you.