Leviticus 19:31 ‘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 20:6 ‘And the person who turns to mediums and familiar spirits, to prostitute himself with them, I will set My face against that person and cut him off from his people.
Deuteronomy 18:9-14 “When you come into the land which the LORD your God is giving you, you shall not learn to follow the abominations of those nations. There shall not be found among you anyone who makes his son or his daughter pass through the fire, or one who practices witchcraft, or a soothsayer, or one who interprets omens, or a sorcerer, or one who conjures spells, or a medium, or a spiritist, or one who calls up the dead. For all who do these things are an abomination to the LORD, and because of these abominations the LORD your God drives them out from before you. You shall be blameless before the LORD your God. For these nations which you will dispossess listened to soothsayers and diviners; but as for you, the LORD your God has not appointed such for you.
1 Samuel 15:23 For rebellion is as the sin of witchcraft, And stubbornness is as iniquity and idolatry. Because you have rejected the word of the LORD, He also has rejected you from being king."
Isaiah 8:19-20 And when they say to you, “Seek those who are mediums and wizards, who whisper and mutter,” should not a people seek their God? Should they seek the dead on behalf of the living? To the law and to the testimony! If they do not speak according to this word, it is because there is no light in them.
1 Samuel 28:3-9 Now Samuel had died, and all Israel had lamented for him and buried him in Ramah, in his own city. And Saul had put the mediums and the spiritists out of the land. Then the Philistines gathered together, and came and encamped at Shunem. So Saul gathered all Israel together, and they encamped at Gilboa. When Saul saw the army of the Philistines, he was afraid, and his heart trembled greatly. And when Saul inquired of the LORD, the LORD did not answer him, either by dreams or by Urim or by the prophets. Then Saul said to his servants, “Find me a woman who is a medium, that I may go to her and inquire of her.” And his servants said to him, “In fact, there is a woman who is a medium at En Dor.” So Saul disguised himself and put on other clothes, and he went, and two men with him; and they came to the woman by night. And he said, “Please conduct a séance for me, and bring up for me the one I shall name to you.” Then the woman said to him, “Look, you know what Saul has done, how he has cut off the mediums and the spiritists from the land. Why then do you lay a snare for my life, to cause me to die?”
2 Chronicles 33:6 Also he caused his sons to pass through the fire in the Valley of the Son of Hinnom; he practiced soothsaying, used witchcraft and sorcery, and consulted mediums and spiritists. He did much evil in the sight of the LORD, to provoke Him to anger.
Acts 16:16-18 Now it happened, as we went to prayer, that a certain slave girl possessed with a spirit of divination met us, who brought her masters much profit by fortune-telling. This girl followed Paul and us, and cried out, saying, 'These men are the servants of the Most High God, who proclaim to us the way of salvation.' And this she did for many days. But Paul, greatly annoyed, turned and said to the spirit, “I command you in the name of Jesus Christ to come out of her.” And he came out that very hour.
Revelation 21:8 But the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone, which is the second death.'