we've been given a clue...
"No one will no the DAY or the HOUR"
not even the Son of God, as God is the only one who knows.

the world will not be destroyed, however, the population of the world will be (at least a majority will).

God knows the time; however that does not mean it is set in stone. ultimately we are waiting for specific events to take place that will trigger the "doom" event (or rapture, or enlightenment, or the coming, or whatever). It has been left in the hands of us humans, as well as Satan and his army, and whatever other extra-natural beings that be to determine when and how the end will be triggered. That's the reason for the holy wars and "jihads". some are trying to fulfill the events for the "Doom event" and some are trying to stop it, where some are trying to ensure control after such an event.....

we must look deep for clues that have been or need to be fulfilled.