John 1:4-5 amp

In him was Life, and the Life was the Light of men.  And the Light shines on in the darkness, for the darkness has never overpowered it (put it out or absorbed it or appropriated it, and is unreceptive to it).

The devil has tried for 6000 years to quench the light of Jesus on this earth and has never, ever accomplished it and never will.  Jesus is the positive life force on this earth, calling to man to be saved.  Jesus became our substitute for our sins so we can be saved from the darkness. We have nothing to fear.