'World's' in the Bible

when people lie about us, we answer in a friendly manner. We are the world's dirt and scum, even now.

in which you formerly lived according to this world's present path, according to the ruler of the kingdom of the air, the ruler of the spirit that is now energizing the sons of disobedience,

Command those who are rich in this world's goods not to be haughty or to set their hope on riches, which are uncertain, but on God who richly provides us with all things for our enjoyment.

Adulterers, do you not know that friendship with the world means hostility toward God? So whoever decides to be the world's friend makes himself God's enemy.

But whoever has the world's possessions and sees his fellow Christian in need and shuts off his compassion against him, how can the love of God reside in such a person?

They are from the world; therefore they speak from the world's perspective and the world listens to them.