Amillennialists have had those kinds of understandings and Scriptures throughout the NT period. And yet they found the only way to explain the Millennium was by seeing Satan as having somehow been bound at the cross, for our Salvation.
It's an odd thing. Satan can't be free to roam and bound at the same time, and yet that's what they've said. He was bound in some sense for our Salvation, and yet still able to attack the Church. Which is it?
Again, the Bible spells this out.
Revelation 20:3 KJV
3) 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.
Revelation 20:7-10 KJV
7) And when the thousand years are expired, Satan shall be loosed out of his prison,
8) And shall go out to deceive the nations which are in the four quarters of the earth, Gog and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
9) And they went up on the breadth of the earth, and compassed the camp of the saints about, and the beloved city: and fire came down from God out of heaven, and devoured them.
10) And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
Satan will be bound for 1000 years to prevent him from deceiving the nations. When he is loosed, he will go and deceive the nations to gather them to battle to the camp of the saints, and the beloved city.
If you don't think the kingdom happens this way, then you have to come up with meanings for all of these things, leading us to these little conundrums.
Anybody who has lived godly in Christ Jesus knows what it's like to be opposed by satanic figures. Satan certainly is not bound. We have power from Christ and from God's word. But neither are we immune from satanic attacks just as Jesus was.
I believe it's important to have an expectation of satanic opposition so that we are not caught unprepared. I also find it important to believe that a backslidden nation like Israel can be restored due to the importance of our embracing the doctrine of grace.
I agree. None of the Bible's teachings exist in a vacuum, all are linked together, and error in one place breeds error in another. We are warned to be vigilant specifically because Satan roams about, not bound, like a roaring lion seeking whom he might eat.
An age is coming, I believe, in which grace will finally be revealed in full to not just Israel but all the nations. The binding of Satan will allow this to be fully revealed.
The blessed kingdom, in which God gives to Israel the benefits of their covenant with Him! In amazing splendor!
Much love!