'Sons of This World' in the Bible

And his lord commended the unrighteous steward because he had done wisely: for the sons of this world are for their own generation wiser than the sons of the light.

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

Yet not altogether with lewd persons of this world, or with the covetous, or extortioners, or with idolaters: for then ye must needs go out of the world.