Q: Preacher, Jesus is Lord. So, what kind of spiritual authority has Satan?
A: Zero. Neither he ever had.
At the same time,
…the god of this world hath blinded the minds of them which believe not, lest the Light of the Glorious Gospel of Christ, Who is the Image of GOD, should shine unto them. (2Corinthians 4:4)
His authority is quite comparable to that of the mafia – real & illegal.
In full accord with Genesis 1:26-28, we humans have our irrevocable Spirit Dominion over this Earth, sealed up by the Word of LORD GOD. That kind of Power Adam couldn’t pass on or hand over, or surrender to Satan (as some expositors teach) even praying the evil one on both knees. However, considering 2Corinthians 4:4, we can & do open or close up our mind to/on whomsoever we please, and eventually become the Servants of GOD or the puppets of the devil.
As his puppets silly folks gradually destroy the beautiful World, they live in. The powerless evil spirit actually rules like a king. The Blessed Statement of Jesus in Matthew 28:18 made no difference in this regard – we people (the most important part of GOD's Creation) remain free to serve Him or the evil one.
Judged & cursed, Satan is still the god of this world steadily leading his demons & foolish unbelievers to eternal death.
Let's neither underestimate the enemy nor forget what we confess:
For Thine is the Kingdom, and the Power, and the Glory, for ever. Amen. (Matthew 6:13)
Isaiah 14:12-15 .................. Satan's fallen & condemned.
Ezekiel 28:3-5 .................... The wise foe.
Daniel 8:24-25 ................... ditto
Matthew 4:4,7,10 ............... Our Mighty Weapon -- It Is Written...
Matthew 28:18 ................... Mind the Power of Jesus.
John 8:44 ........................... The lie is Satan's main weapon.
John 12:31; 16:11 .............. Satan's judged.
2Corinthians 11:13-14 ....... The lie of Satan & his servants.
Ephesians 2:2-3 ................. The lie of Satan rules the world.
Ephesians 6:10-18 ............. Our spiritual Weapons.
1Peter 5:8-9 ....................... Don't underestimate the enemy!
1John 3:8 ........................... Jesus vs Satan.
1John 5:18 ......................... We are able to withstand the devil.
Revelation 12:9; 20:7-10 ... The destiny of Satan the liar & his servants.
Revelation 12:12 ................ Satan is doomed and he knows that.
(From “Q & A” chapter 36)