Give No Regard To Mediums.
Give no regard to mediums and familiar spirits; do not seek after them, to be defiled by them: I am the Lord your God. Leviticus 19:31 NKJV
A caution against all communion with witches, and those that were in league with familiar spirits: "Regard them not, seek not after them, be not in fear of any evil from them nor in hopes of any good from them. Regard not their threatenings, or promises, or predictions seek not to them for discovery or advice, for, if you do, you are defiled by it, and rendered abominable both to God and your own consciences." This was the sin that completed Saul's wickedness, for which he was rejected of God, 1 Chronicles 10:13. - Matthew Henry