When will they ever learn?

There is no greater power.

Jesus summoned His twelve disciples and gave them authority over unclean spirits, to cast them out, and to heal every kind of disease and every kind of sickness. 

For in the case of many who had unclean spirits, they were coming out of them shouting with a loud voice; and many who had been paralyzed and lame were healed. 

You will know who dwells in darkness by the words they spew and the threats they make and the arrogance which blinds them to their own vulnerability. Remember there is help not only upon this earth but from Above. Those forces both earthly and Divine are already in place to do battle.  So, be at peace.