'World' in the Bible

First of all, I give praise to my God through Jesus Christ for you all, because news of your faith has gone into all the world.

For from the first making of the world, those things of God which the eye is unable to see, that is, his eternal power and existence, are fully made clear, he having given the knowledge of them through the things which he has made, so that men have no reason for wrongdoing:

In no way: because if it is so, how is God able to be the judge of all the world?

For this reason, as through one man sin came into the world, and death because of sin, and so death came to all men, because all have done evil:

But I say, Did not the word come to their ears? Yes, certainly: Their sound has gone out into all the earth, and their words to the ends of the world.

Now, if their fall is the wealth of the world, and their loss the wealth of the Gentiles, how much greater will be the glory when they are made full?

And let not your behaviour be like that of this world, but be changed and made new in mind, so that by experience you may have knowledge of the good and pleasing and complete purpose of God.