'Nations' in the Bible

And who is as Thy people, as Israel -- one nation in the earth, whom God hath gone to redeem to Him for a people, and to make for Him a name -- and to do for you the greatness -- even fearful things for Thy land, at the presence of Thy people, whom Thou hast redeemed to Thee out of Egypt -- among the nations and their gods?

also them did king David sanctify to Jehovah, with the silver and the gold which he sanctified of all the nations which he subdued:

And -- Thou dost deliver me From the strivings of my people, Thou placest me for a head of nations; A people I have not known do serve me.

Therefore I confess Thee, O Jehovah, among nations. And to Thy name I sing praise.