Mediums and spiritists

My question is about so called mediums and people who say they can see ghosts or talk to dead people. I know there are people out there who are hucksters and they know they are conning people. I want to know about the people who really believe they are listening and talking to dead people. Is this Satan who is doing this?

The connection between mediums and Satan is so well established that God warned his Old Testament people numerous times about mediums: “Let no one be found among you who sacrifices his son or daughter in the fire, who practices divination or sorcery, interprets omens, engages in witchcraft, or casts spells, or who is a medium or spiritist or who consults the dead. Anyone who does these things is detestable to the Lord…” (Deuteronomy 18:10-12) “Do not turn to mediums or seek out spiritists…” (Leviticus 19:31) “When men tell you to consult mediums and spiritists, who whisper and mutter, should not a people inquire of their God? Why consult the dead on behalf of the living? To the law and to the testimony! If they do not speak according to this word, they have no light of dawn” (Isaiah 8:19-20). Jesus’ followers listen to his voice, not Satan’s (John 10:27).