Excellent point! Maybe it's been made before, but I don't recall.
If they are 7 days equally defined, then each one is limited by a corresponding period. The Millennial Day theory is based on this idea, which was promoted by Jews even before Christianity began, and the Apostle John received his revelation.
"Days" are periods of time of limited proportion. If the 7th day was meant to be eternal, the record would've said something like "a time of eternal rest" or "7,8,9..." ;)
Yet Amil will not base their point on reality even if it can be proven.
The whole point is based on an indefinite period of time which has to be symbolic instead of literal.
If the first 6 days were a literal 24 hr time period, and the Sabbath was 1,000 years, then the 6,000 years since the fall could be compared with a Sabbath day without end. God compared His time of 6 24 hour days with a 7th day lasting 1,000 years to let the earth work out creation.
Similarly after 6,000 years of a mess, God would respond with an eternity of righteousness. But Amil will not use Scripture in comparison that is making a literal point, but only Scripture that details figurative points. And no Scripture even defines there will be an eternal Day, as that is an oxymoron. Two totally different concepts in an attempt to make a coherent point, but still only a figurative attempt, not literal.
Peter was not going for an eternal day in 2 Peter 3. The Psalmist was not going for an eternal day in Psalm 90. But the way the ECF are presented here is that this chiliast notion was about an eternal day, instead of a literal 1,000 years. That has yet to be proven, but the op presenter keeps trying to insinuate that point. That would be considered an opinion forced onto the historical record, by those very same people making that point, had it been any other poster making that claim.
Modern Amil do not get their doctrine from those same alledged ecf, any more than any other modern day eschatology. Amil today have switched from a future 1,000 years, to the current here and now of the last 1992 years.
Also the 70th week of Daniel 9 has not been finalized. If that were the case we would already have been in that millennium for an indefinite amount of time. Sin and Adam's dead corruptible flesh, is still an ongoing phenomenon. When the 70th week ends, all will know righteousness. Adam's time will be up. Creation will go back to the way it was prior to Adam's disobedience. That is not Israel centric. That is literally the whole world living in the original Sabbath. Of course Jerusalem, and Jesus' blood relatives will be premier among the rest of the nations.
If there is an issue with segregation, why was Adam set apart from the other sons of God in the Garden of Eden? Was that not literal segregation for a purpose? There is no segregation now, except for what human selfishness defines as segregation. Moses and the Law was a segregation from the world. Abraham was called out, a segregation from the world. Is segregation that is symbolic OK, but not if it is literal?
The only literal thing they concede is the cleansing fire, but only if it literal kills everyone. Certainly not a symbolic fire that literally destroys all of mankind's works. We are talking about a fire that strategically removes all technology, but does not harm any humans. Not just left in rubble but is climactically and dramatically no longer in existence. Certainly the only literal way to read:
"and the works that are therein shall be burned up."
How can that only be symbolic? What all posters fail to grasp is that at any moment the spiritual blindness will be removed along with every human technology. There will be beings that will do God's will without needing any of what we use to make life easier. They will not be bound by current physical limitations. And it will definitely not be the church age, nor the age of Christianity any more. It will be the Day of the Lord. There were no Christians on that 7th day, in Genesis 2, only the sons of God. But the final harvest and the removal of 8 billion souls, has to happen before the Millennium can start. That is being literal, not symbolic. The final harvest is not a suggestion in Matthew 13.