'Nations' in the Bible

Woe to them that are at ease in Zion, and to them that are secure in the mountain of Samaria, the notable men of the chief of the nations, to whom the house of Israel come!

For, lo, I will command, and I will sift the house of Israel among all the nations, like as grain is sifted in a sieve, yet shall not the least kernel fall upon the earth.

that they may possess the remnant of Edom, and all the nations that are called by my name, saith Jehovah that doeth this.