"How many Christians will be embarrassed at that time by their poor and unloving behavior they've had towards other of God's children?"
***********************************
Embarrased???
Warning Jews not to get into the boxcars would not embarrass me in the slightest. I would feel in fact that it is my duty to do so.
Quoting: Anonymous Coward 40260170 I agree. I would plead with them in love. Not rather as some have accused me before of going to burn in hell for my heresy. How helpful would it be to hatefully tell those in the boxcars that their decision would make them burn in hell forever? That's just one example of the vitriol I've personally seen.
However, your analogy is flawed. Christians who believe one non-salvation-oriented doctrine differently than you do are not by that belief "getting into boxcars."
Students of bible prophesy will realize that if the Antichrist is revealed, or when he confirms the covenant with many (esp. with Israel) for 7 yrs, or when he sets up the abomination of desolation, or when 1/3 of the planet dies off, or when the oceans and rivers turn to blood, or any of the many other judgements will come about during the Tribulation, that the Tribulation will then be underway. Then they will likely have time to prepare themselves spiritually for the hell on earth that is to come.
Those who don't know bible prophecy might be caught off-guard.
And Christ told us that we will suffer persecution in this world. It does happen now, and it will happen more in the future, even likely before the rapture happens. That's why it's prudent for all Christians, even pre-tribbers, to be preppers to be ready for anything that might happen in their time here on earth before the rapture. And if they are prepared (as well as one can be), then they will be in a better position to endure the Tribulation if their rapture belief proves to be flawed.
Many of us see the handwriting on the wall, and we are all tasked to be watchers for the end times, so we all have a responsibility to be as ready as we can be, whether that is for pre-rapture disasters, or the Tribulation. Even when we are raptured, we'll likely have friends and/or family that are not believers, who will be left behind. And our normal disaster preps will help those who are left behind to better survive the Tribulation.
So, no matter what, we should all be Preppers in these end times. There is no excuse not to be. Having said that, the greatest and most important prep of all is our spiritual preps. Our relationship with Christ, and that of our family's relationship with Christ, are the most important things we should get right, here and now.
Everything else, including rapture doctrine, is secondary.
Peace
