[Pontiac]

You’re confusing the Old Testament with the New Testament.

Luke is New Testament as I remember.

Luke 4:5-7 “[5] And the devil, taking him up into an high mountain, shewed unto him all the kingdoms of the world in a moment of time. [6] And the devil said unto him, All this power will I give thee, and the glory of them: for that is delivered unto me; and to whomsoever I will I give it. [7] If thou therefore wilt worship me, all shall be thine.”

Satan has dominion to do with the Earth what he will (if God permits it) until the Second Coming.

Demons are in Hell if they have been exorcised and cast there by an exorcist. But there are so many demons it makes no difference to us on Earth.

[boatbums]

You are correct about Satan still being active in this world. He is called "the prince of the power of the air":

And you hath he quickened, who were dead in trespasses and sins; 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: Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others. But God, who is rich in mercy, for his great love wherewith he loved us, Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) (Ephesians 2:1-5)

For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this world's darkness, and against the spiritual forces of evil in the heavenly realms. (Eph. 6:12)