'World' in the Bible

just as [in His love] He chose us in Christ [actually selected us for Himself as His own] before the foundation of the world, so that we would be holy [that is, consecrated, set apart for Him, purpose-driven] and blameless in His sight. In love

far above all rule and authority and power and dominion [whether angelic or human], and [far above] every name that is named [above every title that can be conferred], not only in this age and world but also in the one to come.

in which you once walked. You were following the ways of this world [influenced by this present age], in accordance with the prince of the power of the air (Satan), the spirit who is now at work in the disobedient [the unbelieving, who fight against the purposes of God].

remember that at that time you were separated from Christ [excluded from any relationship with Him], alienated from the commonwealth of Israel, and strangers to the covenants of promise [with no share in the sacred Messianic promise and without knowledge of God’s agreements], having no hope [in His promise] and [living] in the world without God.

For our struggle is not against flesh and blood [contending only with physical opponents], but against the rulers, against the powers, against the world forces of this [present] darkness, against the spiritual forces of wickedness in the heavenly (supernatural) places.