Only those who took God (Jesus) at His Word escaped the destruction of Jerusalem. We can expect that a similar group of believers that will escape the destruction to come, as it surely will.
“Every deed of thoughtful kindness, of obedience, or of self-denial, will reproduce itself in others, and through them in still others. So every act of envy, malice, or dissention is a seed that will spring up in a ‘root of bitterness’ (Hebrews 12:15), whereby many shall be defiled. And how much larger number will the ‘many’ poison? Thus the sowing of good and evil goes on for time and for eternity.”