Here is how Theopedia defines Amillennialism:
Amillennialism (Greek: a- "no" + millennialism) is the view in Christian eschatology which states that Christ is presently reigning through the Church, and that the "1000 years" of Revelation 20:1-6 is a metaphorical reference to the present church age which will culminate in Christ's return. It stands in contrast to premillennialism, which states that Christ will return prior to a literal 1000 year earthly reign; and postmillennialism, which states that Christ's return will follow a 1000 year golden age ushered in by the church.
Since the present church age has lasted for over 2,000 years, it should be clear that Amillennialism says that there really is no Millennium.
Okay, I see you're objecting here over two main issues: our claim that see's the 'Millennium' lasting for more than 1000 years...so, it's not 'literal'. And the idea that Satan is bound now.
On the first issue, it's important to look at how numbers are used in Revelation. Even within the rest of scripture numbers can and often do hold symbolic significance. As I mentioned before, 7 is always a good basis to start with: It's used 735 times (54 times in the book of Revelation alone) in the bible; the number 7 is the foundation of God's word. If we include with this count how many times 'sevenfold' (6) and 'seventh' (119) is used, our total jumps to 860 references. Seven is the number of completeness and perfection (both physical and spiritual).
We also see in the OT 7 being used when Joshua and the Israelite's circled the walls of Jericho 7 times before it fell, also when Naaman is told to bath 7 times to heal his leprosy, and for animals to be at least 7 days old before sacrifice. In these instances,
7 signifies a completion of some kind: a divine mandate is fulfilled. So when we come to Revelation and see the 7 Churches, 7 seals, trumpets, bowls, etc, we need to understand that there is more than just 7 numerical Churches involved. There is this vast, rich, spiritual history that the bible brings to the number. This is God's doing, not Amillennialists.
Now, with the number of 1000, we can also see that it does not, strictly, need to be interpreted as a literal 1000 years. Bear with me as I explain.
The 1000 is often used to represent 'immensity', 'fullness of quality', or 'multitude'. Which you might say is a bit of a stretch, but if we look at scripture, in regards to time, it is easy to see how scholars came to this conclusion, and how in particular with reference to 'time' 1000 is almost always used symbolically.
[7] He is the LORD our God;
his judgments are in all the earth.
[8] He remembers his covenant forever,
the word that he commanded, for a thousand generations,
[9] the covenant that he made with Abraham,
his sworn promise to Isaac,
[10] which he confirmed to Jacob as a statute,
to Israel as an everlasting covenant, - Psalm 105:7–10
Clearly the covenant God made with Abraham was an everlasting covenant, it says so here, but it also says it's for "a thousand generations". Well, which one is it? It cannot be both, can it? It can if it represents a long period of time that God has predetermined.
[10] For every beast of the forest is mine,
the cattle on a thousand hills. - Psalm 50:10
Again...do we understand that God only owns the cows on 1000 hills? No, of course he owns all the cows, on all the hills. He owns everything. But he is using the number 1000 symbolically to present a truth.
[1] Then Job answered and said:
[2] “Truly I know that it is so:
But how can a man be in the right before God?
[3] If one wished to contend with him,
one could not answer him once in a thousand times. - Job 9:1–3
So, Job is able to get a good zinger in every 1000 times. God 999, Job 1. Nope! God always wins, because God is always right. 1000 is used symbolically again.
You get my point. Not every use of 1000 in scripture has to be, or can be, seen as literal. In fact when we read carefully we see how often God has used it to represent a large period of time or number, the fullness of which is determined only by him. So when we come to Revelation where numbers are used so symbolically anyway, why should we start from a position thinking that it MUST be literal?
And since the present church age also shows that Satan and his evil spirits have been (and are) controlling large segments of the world, "Christ is presently reigning through the church" becomes a joke.
Okay, I do understand how this is a hard one to allow. But I have to say, how is "Christ is presently reigning through the Church" a joke? Unless you, like the Disciples, are missing what his Kingdom is. As I posted in my previous answer to you. Jesus himself said that his kingdom is "not of this world". How much plainer can you become? He said that if his kingdom was of this world, his servants would fight to save him. But we are not to fight, we are not to "triumph" in the manner you (or they) expect a "kingdom" to be to come out on top. No...in this age, in this aspect of the kingdom, Christ calls us to triumph by humbling ourselves like he did. Christ and his Kingdom reigns through the Church when we submit to him, spread the gospel through his power, and love others through the power of the Spirit. That is the power of the Kingdom of God. It will only be in the Age to Come that it will be said:
Then the seventh angel blew his trumpet, and there were loud voices in heaven, saying, “The kingdom of the world has become the kingdom of our Lord and of his Christ, and he shall reign forever and ever.” -Revelation 11:15
And as for Satan being "bound"...many people struggle with that. They say "but look at all the evil in the world, surely that is proof that Satan is still here.
Well, sure. But, what does Rev 20 actually say about Satan being bound.
And he seized the dragon, that ancient serpent, who is the devil and Satan, and bound him for a thousand years, [3] and threw him into the pit, and shut it and sealed it over him, so that he might not deceive the nations any longer, until the thousand years were ended. After that he must be released for a little while. - Revelation 20:2–3
It is actually fairly specific about what Satan is being bound against...about what he will no longer be able to do. It gives us the information again at his release, plus a little more detail.
[7] And when the thousand years are ended, Satan will be released from his prison [8] and will come out to deceive the nations that are at the four corners of the earth, Gog and Magog, to gather them for battle; their number is like the sand of the sea. -Revelation 20:7–8
He cannot deceive the nations while bound. And as soon as he is released, he will deceive them with the purpose of gathering them together in battle against the saints. Basically...Satan being "bound" now is why we have never had a full scale attempt by the world to wipe us pesky Christians out, even though pretty much everyone hates us. They "somehow" just can't get organized. But that time is coming when Satan will be released and we will see a global effort against God's people.