God says to Occultists...

Behold, all you that kindle a fire, that compass yourselves about with sparks: walk in the light of your fire, and in the sparks that you have kindled.  This shall you have of my hand; you shall lie down in sorrow. (Isaiah 50:11)

And when they shall say to you, Seek them that have familiar spirits, and to wizards that peep, and that mutter: should not a people seek unto their God? (Isaiah 8:19)

...Now the works of the flesh are manifest, which are; adultery, fornication (extra-marital sex), uncleanness, lasciviousness, idolatry, witchcraft, hatred, variance, emulations, wrath, strife, sedetions, heresies, envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in times past, that they which do such things shall not inherit the kingdom of God. (Galatians 5:19-21)

...But the fearful and unbelieving, and the abominable, and murderers, and whoremongers (pimps), and sorcerers, and idolators, and all liars, shall have their part in the lake which burns with fire and brimstone: which is the second death. (Revelation 21:8)

...A certain sorcerer, a false prophet... withstood them, seeking to turn away the deputy from the faith.  Then Paul, filled with the Holy Ghost, set his eyes upon him, and said, O full of subtilty and all mischief, you child of the devil, you enemy of all righteousness, will you not cease to pervert the right ways of the Lord?  And now behold, the hand of the Lord is upon you, and you shall be blind, not seeing the sun for a season.  And immediately there fell on him a mist and a darkness... Then the deputy, when he saw what was done, believed, being astonished at the doctrine of the Lord. (Acts 13:6-12)

There shall not be found among you any one that makes his son or his daughter to pass through the fire, or that uses divination, or an enchanter, or a witch, or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer.  For all that do these things are an abomination to the Lord...
For these nations... hearkened unto observers of times, and unto diviners: but as for you, the Lord your God has not suffered you to do so.
(Deuteronomy 18:10-14)