'Nations' in the Bible

Wherefore remember that ye, once nations in the flesh, who are called uncircumcision by that called circumcision in the flesh done with the hand;

For this reason I Paul, prisoner of the Christ Jesus for you nations,

that they who are of the nations should be joint heirs, and a joint body, and joint partakers of his promise in Christ Jesus by the glad tidings;

To me, less than the least of all saints, has this grace been given, to announce among the nations the glad tidings of the unsearchable riches of the Christ,

This I say therefore, and testify in the Lord, that ye should no longer walk as the rest of the nations walk in the vanity of their mind,