Ephesians 2:1-2

1And you [He made alive when you] were [spiritually] dead and separated from Him because of your transgressions and sins,

2in 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].