Leviticus 19:31 Do not turn to ghosts and do not inquire of familiar spirits to be defiled by them: I eternal am your creator.
Leviticus 20:27 A medium or a wizard--whether man or woman--shall surely be stoned to death. They have caused their own doom.
Deuteronomy 18:9-13 When you arrive in the Promised Land you must be very careful lest you be corrupted by the horrible customs of the nations now living there. For example, any Israeli who presents his child to be burned to death as a sacrifice to heathen gods must be killed. No Israeli may practice black magic, or call on the evil spirits for aid, or be a fortune teller, or be a serpent charmer, medium, or wizard, or call forth the spirits of the dead. Anyone doing these things is an object of horror and disgust to yhwy. And it is because these nations do these things, that eternal your sovereign will displace them. You must walk blamelessly before eternal your sovereign.
LINKPretty interesting stuff, if that's what you're into....