Bible references about not contacting spirits.

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.

2 Kings 21: 6     Also he made his son pass through the fire, practiced soothsaying, used witchcraft, and consulted spiritists and mediums. He did much evil in the sight of the LORD, to provoke Him to anger.

Deuteronomy 18      ¹⁰ 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, ¹¹ or one who conjures spells, or a medium, or a spiritist, or one who calls up the dead. ¹² 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. ¹³ You shall be blameless before the LORD your God. ¹⁴ 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.

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.

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.

⁷ Consecrate yourselves therefore, and be holy, for I am the LORD your God.

²⁷ ‘A man or a woman who is a medium, or who has familiar spirits, shall surely be put to death; they shall stone them with stones. Their blood shall be upon them.’”

Isaiah 8      ¹⁹ 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?  ²⁰ 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.

Matthew 8:16   When evening had come, they brought to Him many who were demon-possessed. And He cast out the spirits with a word, and healed all who were sick …

Mark 3:11   And the unclean spirits, whenever they saw Him, fell down before Him and cried out, saying, “You are the Son of God.”

1 Timothy 4     Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons, ² speaking lies in hypocrisy, having their own conscience seared with a hot iron …

Revelation 16     ¹³ And I saw three unclean spirits like frogs coming out of the mouth of the dragon, out of the mouth of the beast, and out of the mouth of the false prophet. ¹⁴ For they are spirits of demons, performing signs, which go out to the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty.

I hope this will do. God bless as you study these Scriptures!