The fear of being alone, the fear of strangers and the fear of darkness. Amazingly these fears follow us our entire lives, yet most would not admit it. God allows what is natural to be imbued in all humans early in their lives. We are naturally carnal, verse 49- and born with the image of the earthy. We are just plainly put-human beings, natural.
Natural fear is real.
Gods exist, he is not artificial, he has not been altered and he is not in disguise. God is innate-self generating real life. The devil is keenly aware of the natural fears that we have and seeks to magnify them. His goal is to take things that are natural and make them crippling. He is the creator of neurotic fear.