'World' in the Bible

Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,

Beloved, I urge you as aliens and strangers [in this world] to abstain from the sensual urges [those dishonorable desires] that wage war against the soul.

Therefore, since Christ suffered in the flesh [and died for us], arm yourselves [like warriors] with the same purpose [being willing to suffer for doing what is right and pleasing God], because whoever has suffered in the flesh [being like-minded with Christ] is done with [intentional] sin [having stopped pleasing the world],

Whom resist stedfast in the faith, knowing that the same afflictions are accomplished in your brethren that are in the world.