1 Corinthians 15:28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.
What exactly are you intending to say in relation to this verse? You never make that clear.
The point is, once that verse is fulfilled, this means there is nothing preventing something from continuing all throughout eternity at that point. Which then means some things have to be meaning before that verse is fulfilled, otherwise it is applicable all throughout eternity. It makes zero sense, for example, to have authority over 10 cities all throughout eternity. It doesn't matter what it looks like to have that authority. The point is, it involves having authority over something after Christ has returned and that it makes zero sense they maintain this authority over these things, cities in this case, all throughout eternity, where that involves the Son also himself be subject unto him that put all things under him, that God may be all in all.
Nor does it make sense to have authority over something for one day or less. Therefore, there has to be a period of time after Christ has returned but before 1 Corinthians 15:28 is fulfilled, in order for them to utilize this authority.
The same logic per Zechariah 14:16-19, especially verses 17-19.
Zechariah 14:12 And this shall be the plague wherewith the LORD will smite all the people that have fought against Jerusalem; Their flesh shall consume away while they stand upon their feet, and their eyes shall consume away in their holes, and their tongue shall consume away in their mouth.
Zechariah 14:16 ¶And it shall come to pass, that every one that is left of all the nations which came against Jerusalem shall even go up from year to year to worship the King, the LORD of hosts, and to keep the feast of tabernacles.
17 And it shall be, that whoso will not come up of all the families of the earth unto Jerusalem to worship the King, the LORD of hosts, even upon them shall be no rain.
18 And if the family of Egypt go not up, and come not, that have no rain; there shall be the plague, wherewith the LORD will smite the heathen that come not up to keep the feast of tabernacles.
19 This shall be the punishment of Egypt, and the punishment of all nations that come not up to keep the feast of tabernacles.
Anyone who insists verse 12 has already been fulfilled, in any sense, there is clearly something wrong with that person, and that that person couldn't possibly be taken serious by any reasonable person, since it is absurd verse 12 has already been fulfilled.
Clearly, verses 16-19 are meaning post the fulfillment of verse 12. And clearly, verse 12 can't get fulfilled to begin with unless it involves the DOTL and the 2nd coming. That undeniably means verse 16-19 fit post the 2nd coming, not prior to the 2nd coming.
Regardless what the following might look like is not the point---shall even go up from year to year. The point is, it is impossible to fulfill that in a single day or less.
Then if we factor in verses 17-19 that it too is meaning post the 2nd coming, how is it remotely reasonable that it will continue in that manner all throughout eternity? After all, if Amil is correct that 1 Corinthians 15:28 is fulfilled the same day Christ returns, which is already absurd to begin with, this means verses 17-19 have to be applied to all of eternity since there would be no period of time after Christ returns, but before 1 Corinthians 15:28 is fulfilled, preventing these verses from continuing in that manner forever.
And since it is absurd that verses 16-19 are applicable all throughout eternity, this means a period of time is required after the 2nd coming, but before 1 Corinthians 15:28 is fulfilled, that has a beginning and an end where verses 16-19 can fit, thus preventing them from continuing in that manner forever. If the millennium is not what can explain this, then what can explain it? Amil certainly doesn't have anything to explain it. No surprise there since Amil has zero to explain a lot of things like this.