Revelation suggests a multitude from every tribe and tongue will be with Christ at the end...how many raised from the grave and how many taken up and changed...who can say?
Yes , this is the hundred and fourty four thousand.
The below scripture will help you see where i am comming from.
Romans 8:29-30
For those he foreknew he also predestined to become conformed<
to the imag of his son, so that he would be the firstborn among many brethren
30 and these who he predestined, he also called, and those he called, he also justified, and those whom he justified he also glorified.
This is all past tense, it had already happenen
1 john 12:23
And Jesus answered them , saying, the hour is come, that the son of man should be glorified.
Jesus was glorified after his death burrial and resurection.
1 Cor 15
But now is Christ risen from the dead and become the first fruits of them that slept.
Again past tense,it had already happened.
Paul was explaining to the corinthianss that there was a resurection, they believed Christ went by himself.
Hosea 6:2
After two days he will revive us, in the thrid day he will raise us up, and we shall live in his sight.
I honestly don`t know why Paul worded it the way he did in thesolonians, but Jeesus said he would raise us up at the last day, how long is a day? it could be a thousand years.