'Of This World' in the Bible

For the wisdom of this world is foolishness before God. For it is written, “He is the one who catches the wise in their craftiness”;

I did not at all mean with the immoral people of this world, or with the covetous and swindlers, or with idolaters, for then you would have to go out of the world.

and those who use the world, as though they did not make full use of it; for the form of this world is passing away.