And the soul that turneth after such as have familiar spirits, and after wizards, to go a whoring after them, I will even set My face against that soul, and will cut him off from among his people. (Leviticus 20:6 KJV)
The term “familiar spirits” is used in the Bible to describe those who use information gained through demons on a regular basis. In those days, these people would have included psychics, tarot card readers, palm readers, witch doctors, along with wizards. Is it harmless to get your palm read? Or to go to a tarot card reader?
According to the above scripture, there is a stiff penalty for associating with spirits who are not from God: He turns His face from us. This means we will lose God's favor and His presence. If you were cut off from your people, you couldn't go to the temple to pray or to offer sacrifices. For Christians this means that your prayers will be hindered if you listen to familiar spirits!