Here, look, it's easy to see, I think (but kind of tired right now so I may not have gotten the logic entirely straight).
If, as I understand the millennium reign correctly, for those saved, at the very beginning of it, they (supposedly) will be raised; however, it would then be impossible for there to be a thousand-year period after that raising, because the raising will occur on the last day. With it happening on the last day, there obviously cannot be more days to follow it in order to accommodate another a thousand years.
[Jhn 6:44 KJV] 44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day.
[Jhn 12:48 KJV] 48 He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day.
This is also substantiated by 1co 15:52, where we are told the dead shall be raised at the last trump. The last trump is sounded
on the last day I believe. The last trump is the seventh (last) trumpet and is sounded by the seventh angel.
[1Co 15:52 KJV] 52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
[Rev 10:6-7 KJV]
6 And sware by him that liveth for ever and ever, who created heaven, and the things that therein are, and the earth, and the things that therein are, and the sea, and the things which are therein, that there should be time no longer:
7 But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets.
If, as I understand the millennium reign correctly, for those saved, at the very beginning of it, they (supposedly) will be raised; however, it would then be impossible for there to be a thousand-year period after that raising, because the raising will occur on the last day. With it happening on the last day, there obviously cannot be more days to follow it in order to accommodate another a thousand years.
[Jhn 6:44 KJV] 44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day.
[Jhn 12:48 KJV] 48 He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day.
This is also substantiated by 1co 15:52, where we are told the dead shall be raised at the last trump. The last trump is sounded
on the last day I believe. The last trump is the seventh (last) trumpet and is sounded by the seventh angel.
[1Co 15:52 KJV] 52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
[Rev 10:6-7 KJV]
6 And sware by him that liveth for ever and ever, who created heaven, and the things that therein are, and the earth, and the things that therein are, and the sea, and the things which are therein, that there should be time no longer:
7 But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets.