'World' in the Bible

As he spake by the mouth of his holy prophets, which have been since the world began:

And it came to pass in those days, that there went out a decree from Caesar Augustus, that all the world should be taxed.

And the devil, taking him up into an high mountain, shewed unto him all the kingdoms of the world in a moment of time.

For what is a man advantaged, if he gain the whole world, and lose himself, or be cast away?

That the blood of all the prophets, which was shed from the foundation of the world, may be required of this generation;

For all these things do the nations of the world seek after: and your Father knoweth that ye have need of these things.

And the lord commended the unjust steward, because he had done wisely: for the children of this world are in their generation wiser than the children of light.

Who shall not receive manifold more in this present time, and in the world to come life everlasting.

And Jesus answering said unto them, The children of this world marry, and are given in marriage:

But they which shall be accounted worthy to obtain that world, and the resurrection from the dead, neither marry, nor are given in marriage: