The evil deity's best argument against the existence of good (Father in a Heavenly realm) is to use man's pride by claiming to give them more knowledge or intelligence than others. People that adopt this foolish mindset find themselves to be spiritually empty inside and always seeking to fill a void that will never be filled, since they have shunned the one true answer. In general, they are negative or miserable people.

If there were no God, spiritual entities would certainly not cower, hiss or react at the mention of Jesus. They know the truth and you are simply attempting to use poor logic in your human meat suit. Try saying the name Rumpelstillskin to an evil spirit. It would get no reaction or maybe even laughter. Jesus or God's name becomes a totally different story.