Which is what IMO makes the Left Behind series so unbelievable, right at the outset. The Rapture has occurred, and the "prophetic clock" is now inexorably counting down the final seven years. Our protagonists form the "Tribulation Force", actually thinking they can alter, delay, or even interrupt the prophetically-forecasted chain of events. Why would they want to do that now? Why would they think they can? If the Antichrist can be stopped (or even merely delayed), wouldn't that mean that the prophesies are made false by their actions?
OK, I read some of them.
The point we are both making here, a bit more clearly said, is like many Christians, they deny God's sovereignty.