The dispensational approach has newly converted Jews as a main contingent of the post-rapture tribulation saints who evangelize the world. But this formulation is inconsistent with Matthew 24:10 which expressly states that many will be offended and hate one another. This cannot apply to newly converted Jewish-Christian believers, converted by as-yet unknown supernatural revelations of Jesus Christ to Jews worldwide similar to Joseph in Egypt revealing himself to his brethren. The revelation that Jesus Christ is not just a God of the Gentiles but is in fact their long promised messiah, will engender the most dedicated fidelity to the gospel message of Christ soaring above any persecution that would cause others to become offended.
After a pretribulation rapture, there would not be a blended mixture of hard-core tribulation saints in close association with nominal adherents in a worshipping fellowship. There would be nothing in common between these two groups after the rapture to bring them together in fellowship. After the rapture, whenever it occurs, the tribulation saints from then-on-after will be a distinct and isolated group notable for their purity, zeal, commitment, and dedication of purpose. The required diverse combination of a large number of genuine Christians mixed with a large number of nominal churchgoers, for Matthew 24:9-10 to occur, will simply not exist after a world-emptying pretribulation rapture taking all Spirit-born Christians off the earth.
Therefore, either there is some extremely intense persecution occurring pretribulation for the main Christian church prior to the rapture, causing this dissension and culling-out within the “mixed multitude”, or conversely the continuous uninterrupted existence on earth of the combined main body of the Christian church plus the apostate church, extends and overlaps into the tribulation period itself for some period of time.
Some large group of people (“many”) identified in these biblical verses must betray and hate other people in the group, for this very specific and unambiguous prophecy to be fulfilled. The persecution that causes this internal dissension, and the large group of people who break-away to become disloyally offended and hateful, must both be in-place at the same time period. If the hard-core, last-chance group of tribulation saints would probably not be the people to react this way to the life-and-death trials of the end-times, then it is logical to conclude that these verses apply to a time period when a large mixed group of people in the Christian church and in the apostate church are still together. This then pushes the rapture forward into and beyond the tribulation starting point for some unspecified period of time having this intense persecution and tribulation, which would trigger the events as described in Matthew 24:9-10.