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@PeteR I know less and less the longer I study and ponder this - but I become clearer in how to act in light of it.
I completely reject the pre-trib rapture idea. Now, it might actually happen to be true, and that would be a pleasant surprise. But we are told to prepare for hard times, and if we think we'll be whisked away we won't prepare. So it's best to reject it and assume we'll go through hard times, so we prepare for them.
Or as I sometimes say, better to be a pessimist than an optimist, because a pessimist will have many pleasant surprises, while an optimist will have many disappointments.
Regarding the millennial / amillenial debate: Our focus needs to be on living in the Kingdom of God
today. If He is our King, we are to function as citizens of that Kingdom, and grow the Kingdom. If it turns out that the millennium refers to the "church age" of today, as most of the church has taught for most of history - then we're doing the right thing. And if it turns out that the millennium refers to a future thousand-year reign, as the evangelical and hebrew roots denominations presently teach - we're still doing the right thing.
Our focus should be on how to act today. Not on trying to understand the future. However hard we study that we'll get parts of it wrong, and we won't know which parts until it happens.