'World' in the Bible

According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:

Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come:

Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:

That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:

And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ:

Unto him be glory in the church by Christ Jesus throughout all ages, world without end. Amen.

For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.