You did not answer my question. You avoided it! Why?
You are adding 2+2 and getting 22.
A lot of people forget, Christ did not only defeat sin through His sinless life, atoning death, and glorious resurrection, He also defeated death, Hades, the devil and eternal punishment. None of these therefore will hold dominion over the believer ever again.
Before the resurrection the redeemed dead were forced to stay in Hades awaiting the defeat of sin, death, Hades and Satan. The limitations that once held God’s people from the presence of God now restrain Satan so that he cannot access heaven any more to accuse the elect. Jesus opened heaven up to the redeemed (both living and dead) when he defeated all our great enemies. He consequently emptied Abraham's bosom and took the dead in Christ in heaven.
So, I would say the reigning with Christ in heaven could only happen after He had conquered every enemy of righteousness. Jesus taught in John 11:25, saying,
“I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live: And whosoever liveth and believeth in me shall never die."
This is speaking of the resurrection life that can be enjoyed in this life through faith.
- Jesus Christ perfectly fulfilled every lofty demand that the law required Him to achieve.
- He achieved every demand that His Father demanded off Him.
- He satisfied every demand justice required of Him.
He paid the penalty for your sin in full. Justice was satisfied. He took upon Himself your punishment. He stood in your stead. The penalty has already been paid. Believers are no longer in condemnation.
Jesus testified in John 16:11:
“the prince of this world is judged.”
The devil is already judged. He is not waiting to be judged. He is already been condemned to his eternal doom.
In John 12:31-33 Christ predicted, shortly before He defeated the power of Satan at the cross,
“now is the judgment of this world: now shall the prince of this world be cast out. And I, if I be lifted up from the earth, will draw all men unto me. This he said, signifying what death he should die” (John 12:31-33).
Satan being cast out of heaven means his seat of accusation against believers before God is gone forever. He cannot accuse you before the throne of heaven anymore, because your penalty is fully paid. The only thing he can do is point the finger to you directly and hope that you are stupid enough to listen to him.
Here was the time of his casting down - after the cross. Here was the time of the unblinding of the nations (the Gentiles). Here Christ gloriously dethroned Satan from his previous, largely unchallenged, global earthly rule and his place of accusation in heaven. Satan’s movement, liberties and sway on earth and in heaven received a severe blow.
Revelation 20:1-5 parallels Revelation 12:
"And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand. And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years, And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season. And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years. But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection."
This is the authority Jesus secured through His resurrection. He cast Satan out of heaven and then restrained him with spiritual chains so that the Gospel could enlighten the nations. Satan's defeat came after the resurrection.