What is the order of resurrection for the church age believers, first fruits, and Old Testament/tribulation believers?
The first fruits are taken out first, then the church age believers. After that comes the resurrection of all Old Testament believers and tribulation believers. That last resurrection occurs 75 days into the Kingdom, completing all resurrections of the believers of the age.
Les teaches that the church age believers are taken out, the first fruits are taken out before that, and then comes the resurrection of all Old Testament believers as well as tribulation believers. This completes the resurrections of all the believers of the age, and then the Kingdom is ready. Les notes that the Old Testament saints' resurrection is 75 days into the Kingdom, so there has to be a reason; he looks to Daniel 2 and the image of Gentile empires as his explanation for that extra 75 days.