Ephesians 2:2
In which you used to live when you followed the ways of this world and of the ruler of the kingdom of the air, the spirit who is now at work in those who are disobedient — the Gentiles were enslaved to the aion ('age,' world system) and the archōn tēs exousias tou aeros ('prince of the power of the air'), Satan himself, who energizes disobedience through spiritual rebellion, a dark portrait of pre-Christian existence.