'World' in the Bible

So he took Him up and showed Him all the kingdoms of the world in a moment of time.

What is a man benefited if he gains the whole world, yet loses or forfeits himself?

so that this generation may be held responsible for the blood of all the prophets shed since the foundation of the world—

For the Gentile world eagerly seeks all these things, and your Father knows that you need them.

People will faint from fear and expectation of the things that are coming on the world, because the celestial powers will be shaken.