Just as the Holy Spirit guides those he indwells and the word of God feeds the spirit man. Likewise demonic spirits influence those who are not born again and the dark thoughts, ideologies and material one consumes feeds their spirit man. The devil has no physical body he operates in the spiritual realm as well and that is how he reaches the physical world through influence of the spirit man in humans.
Why Humans are Drawn to the Darkness
LIZ VARDA 