Leviticus 19:31

19:31 Do not turn to the spirits of the dead and do not seek familiar spirits to become unclean by them. I am the Lord your God.

Leviticus 20:27

Prohibition against Spiritists and Mediums

20:27 “‘A man or woman who has in them a spirit of the dead or a familiar spirit must be put to death. They must pelt them with stones; their blood guilt is on themselves.’”

Deuteronomy 18:10-12

18:10 There must never be found among you anyone who sacrifices his son or daughter in the fire, anyone who practices divination, an omen reader, a soothsayer, a sorcerer, 18:11 one who casts spells, one who conjures up spirits, a practitioner of the occult, or a necromancer. 18:12 Whoever does these things is abhorrent to the Lord and because of these detestable things the Lord your God is about to drive them out from before you.

Isaiah 8:20

8:20 Then you must recall the Lord’s instructions and the prophetic testimony of what would happen. Certainly they say such things because their minds are spiritually darkened.

Romans 3:20

3:20 For no one is declared righteous before him by the works of the law, for through the law comes the knowledge of sin.

James 1:25

1:25 But the one who peers into the perfect law of liberty and fixes his attention there, and does not become a forgetful listener but one who lives it out – he will be blessed in what he does.