God’s perspective & warning:

Isaiah 8:19 (AMP)
When the people [instead of trusting God] say to you, “Consult the mediums [who try to talk to the dead] and the soothsayers who chirp and whisper and mutter,” should not a people consult their God? Should they consult the dead on behalf of the living?

Deuteronomy 18:9-14 9 (AMP)
9 “When you enter the land which the LORD your God is giving you, you shall not learn to imitate the detestable (repulsive) practices of those nations. 10 There shall not be found among you anyone who makes his son or daughter pass through the fire [as a sacrifice], one who uses divination and fortune-telling, one who practices witchcraft, or one who interprets omens, or a sorcerer, 11 or one who casts a charm or spell, or a medium, or a spiritist, or a necromancer [who seeks the dead]. 12 For everyone who does these things is utterly repulsive to the LORD; and because of these detestable practices the LORD your God is driving them out before you. 13 You shall be blameless (complete, perfect) before the LORD your God. 14 For these nations which you shall dispossess listen to those who practice witchcraft and to diviners and fortune-tellers, but as for you, the LORD your God has not allowed you to do so.

Leviticus 20:6-7
6 ‘As for the person who turns to mediums [who consult the dead] or to spiritists, to play the prostitute after them, I shall set My face against that person and will cut him off from his people [excluding him from the atonement made for them]. 7 You shall consecrate yourselves therefore, and be holy; for I am the LORD your God.

Acts 16:16-18
16 It happened that as we were on our way to the place of prayer, we were met by a slave-girl who had [f]a spirit of divination [that is, a demonic spirit claiming to foretell the future and discover hidden knowledge], and she brought her owners a good profit by fortune-telling. 17 She followed after Paul and us and kept screaming and shouting, “These men are servants of the Most High God! They are proclaiming to you the way of salvation!” 18 She continued doing this for several days. Then Paul, being greatly annoyed and worn out, turned and said to the spirit [inside her], “I command you in the name of Jesus Christ [as His representative] to come out of her!” And it came out at that very moment.

If you have consulted spiritualists, medium or psychic:

Repent for that is disobedience to God. For the wages of sin is death, but the gift of God s eternal life in Christ Jesus our Lord – Romans 6:23

Receive the free gift of salvation and be born again. John 3:3, 16-18.

Renounce. Consulting with Spiritualists, mediums and psychics opens doors to the demonic realm. It grants Satan the legal right to influence and control your life. Therefore, you must verbally renounce all association with these things. “This is what the sovereign Lord says: Repent! Turn from your idols and renounce all association with these detestable practice!” Ezekiel 14:6

Destroy. Burn any items you have in your possession (books, pamphlets, crystals, tarot cards etc.) associated with their craft. And many of those who had practiced magical arts collected their books and [throwing book after book on the pile] began burning them in front of everyone. They calculated their value and found it to be 50,000 pieces of silver. Acts 19:18, 19.

Once you have repented, received the gift of salvation, renounced and destroyed those things, you can pray this prayer:

Lord, forgive me for seeking wisdom from any spiritualists, mediums and psychics. Deliver me from the effects of having participated in the act of divination and sorcery. I ask you to come into my heart and cleanse me from all unrighteousness. I confess you, Jesus as my Lord and Saviour, and thank you for saving me and making me whole.
In Jesus’ Name. Amen.