Dan 12:1 "At that time Michael shall stand up, The great prince who stands watch over the sons of your people; And there shall be a time of trouble, Such as never was since there was a nation, Even to that time. And at that time your people shall be delivered, Every one who is found written in the book. 2 And many of those who sleep in the dust of the earth shall awake, Some to everlasting life, Some to shame and everlasting contempt. 3 Those who are wise shall shine Like the brightness of the firmament, And those who turn many to righteousness Like the stars forever and ever. NKJV
A time of trouble such as never was since there was a nation. This has to be the tribulation. At the time of the tribulation God will deliver all who are written in the book. When God delivers Daniel's people He will awaken many of those who sleep. Who are “those” referring to? The Spirit did not say everyone sleeping or all who sleep, He said many (or multitudes) of people are awaken. This cannot be the white throne judgment. It must be the rapture. Of those who are awakened some will live eternally. The rest of the awakened will face eternal contempt.
Therefore; when the rapture takes place and many who sleep in the dust will awake. Some will go to the wedding feast and some to eternal condemnation.
Dan 12:4 "But you, Daniel, shut up the words, and seal the book until the time of the end; many shall run to and fro, and knowledge shall increase." NKJV
God did not always want the prophets to be clearly understood by human wisdom. God has kept some things hidden until the time of end. I believe the churches prior to 1967 may not have been given full understanding in the things kept hidden until the time of the end. Are we near the time of the end? Then we should expect a new understanding of old truths, if we believe God's word.
Some might say that Daniel did not see the 1000 years between the judgment of the righteous and judgment of the bad. He might not have seen it. Being a prophet he reported it as God said it therefore, even if Daniel did not see it, that doesn't make the prophecy less true. My interpretation is true if I can get one more witness to verify,