'Nations' in the Bible

Woe to them that are at ease in Zion and that are secure in the mountain of Samaria, the renowned of the first of the nations, to whom the house of Israel come.

For behold, I command, and I will shake the house of Israel to and fro among all the nations, like as one shaketh corn in a sieve; yet shall not the least grain fall upon the earth.

that they may possess the remnant of Edom, and all the nations upon whom my name is called, saith Jehovah who doeth this.