Scripture Commentary 2 Thessalonians 2

What does Scripture mean 'the whole world lies in wickedness'? Is everyone born with a spirit of antichrist? Why did some teach that Christ had already come? What does 'apostasy' mean and why is it crucial that it occurs before Christ comes the second time? Who are these that will fall away? What keeps this world from being as evil as it could be? Is anything that is not the Truth unrighteousness?