Is Daniel 12:2 speaking of two resurrections or one?
In short it has to be speaking of one resurrection and a 1st Century one at that. While I realize that this interpretation of the text - and I include Dan, 12:1,2 & 3 here, and quite possibly Dan, 4,5,6 & 7 (see below as to these extra four verses) as they are very much connected - goes against conventional wisdom, it becomes all the more believable if we include the following scriptures in the scrutiny:-
Matthew 27:52,53
52 ... and the tombs were opened; and many bodies of the saints who had fallen asleep were raised; 53 and coming out of the tombs after his (Jesus') resurrection they entered the holy city and appeared to many.
John 5:28,29
28 " Do not marvel at this; for an hour is coming, in which all who are in the tombs shall hear his (Jesus') voice 29 and shall come forth; those who did the good deeds to a resurrection of life, those who committed the evil deeds to a resurrection of judgement."
Before I go further, I would recommend, even endeavor to insist, that you take into account my 2023 Q & A, here:- If Dan, 12:1-3, truly follows on in close proximity to the death of Antiochus IV in Dan, 11:45, then what are we to discern of those now living again? ... as this is very much relevant to the discourse.
If, Michael the great prince, is indeed Jesus Christ, we can assume that after Jesus' death, and subsequent resurrection, he can reassume the Archangel's role - arise - and stand guard over the sons of the Israelite nation, in their ... time of distress (66 AD to 73 AD) such as never occurred since there was a nation until that time; and at that time your people, everyone who is found written in the book, will be rescued. Dan, 12:1
In between Jesus' resurrection however, and that which centered around 70 AD, we have, besides the Matthew and John verses, as cited above:-
Daniel 12:2
"And many of those who sleep in the dust of the ground will awake, these to everlasting life, but the others to disgrace and everlasting contempt.
First Resurrection (Firstfruits)
Along with Jesus' resurrection (1st of the firstfruits), we read that many of the saints who had long since fallen asleep (died) were also resurrected, which we are told not to marvel at. Some of whom were to be resurrected to everlasting life and presumably be with Jesus/Michael in the heavenly abode, whereas others were to suffer disgrace and everlasting contempt.
Great Commission - Matthew 28:18-20
18 And Jesus came up and spoke to them (12 Apostles), saying, "All authority has been given to me in heaven and on earth. 19 Go therefore and make disciples of all the nations, ............. 20 teaching them to observe all that I commanded you; and lo, I am with you always, even to the end of the age."
... which I feel should be compared with ...
Daniel 12:3
And those who have insight will shine brightly like the brightness of the expanse of heaven, and those who lead the many to righteousness, like the stars forever and ever.
CONCLUSION
While I am not a preterist, and do believe in the "Second Advent" yet to come, along with a further resurrection (Second Resurrection, thru and encompassing the end of the 1000 year Millennial reign) of peoples, I obviously believe that the Bible, as with Dan,12:1,2 & 3, is, quite possibly, unequivocally even, referencing a 1st Century resurrection of peoples.
Daniel 12:4,5,6, & 7
The above verses speak to an, end of time (not the end of time) which when taken in context with Dan, 12:1,2 & 3, is most likely speaking to, and encompassing, circa, Fall of 29 AD thru Spring of 33 AD, time, times, and half a time. Then to, the 12 Apostles of the Great Commission, thru to martyrdom, circa, 66 AD, and as soon as they finish shattering the power of the holy people, all these events will be completed. Carrying on of course, as already referenced, from 66 AD to 73 AD.