Leviticus 20:6

"'The person that turns to spirits of the dead, and to familiar spirits, to prostitute himself with them, I will even set my face against that person, and will cut him off from among his people.

Leviticus 19:31

"'Do not turn to spirits of the dead, and do not inquire of familiar spirits, to be defiled by them. I am the LORD your God.

Leviticus 20:27

"'A man or a woman that is a medium, or is a wizard, shall surely be put to death: they shall stone them with stones; their blood shall be upon them.'"

Isaiah 8:19

When they tell you, "Consult with the spirits of the dead and familiar spirits who chirp and who mutter. Shouldn't a people consult with their gods, by consulting the dead on behalf of the living?"

Exodus 34:15-16

Do not make a covenant with the inhabitants of the land, lest they play the prostitute after their gods, and sacrifice to their gods, and one call you and you eat of his sacrifice;

Leviticus 19:26

"'You shall not eat any meat with the blood still in it; neither shall you practice divination, nor practice sorcery.

Numbers 15:39

and it shall be to you for a fringe, that you may look on it, and remember all the commandments of the LORD, and do them; and that you not follow after your own heart and your own eyes, after which you use to play the prostitute;

Deuteronomy 18:10-14

There shall not be found with you anyone who makes his son or his daughter to pass through the fire, one who uses divination, one who practices sorcery, or an enchanter, or a sorcerer,

1 Chronicles 10:13-14

So Saul died for his trespass which he committed against the LORD, because of the word of the LORD, which he did not keep; and also because he asked counsel of one who had a familiar spirit, to inquire thereby,

Psalm 73:27

For, behold, those who are far from you shall perish. You have destroyed all those who are unfaithful to you.

Ezekiel 6:9

Those of you that escape shall remember me among the nations where they shall be carried captive, how that I have been broken with their lewd heart, which has departed from me, and with their eyes, which play the prostitute after their idols: and they shall loathe themselves in their own sight for the evils which they have committed in all their abominations.

Hosea 4:12

My people consult with their wooden idol, and answer to a stick of wood. Indeed the spirit of prostitution has led them astray, and they have been unfaithful to their God.

Treasury of Scripture Knowledge

Summary

And the soul that turneth after such as have familiar spirits, and after wizards, to go a whoring after them, I will even set my face against that soul, and will cut him off from among his people.

Bible References

Familiar

Leviticus 20:27
"'A man or a woman that is a medium, or is a wizard, shall surely be put to death: they shall stone them with stones; their blood shall be upon them.'"
Leviticus 19:26
"'You shall not eat any meat with the blood still in it; neither shall you practice divination, nor practice sorcery.
Deuteronomy 18:10
There shall not be found with you anyone who makes his son or his daughter to pass through the fire, one who uses divination, one who practices sorcery, or an enchanter, or a sorcerer,
Isaiah 8:19
When they tell you, "Consult with the spirits of the dead and familiar spirits who chirp and who mutter. Shouldn't a people consult with their gods, by consulting the dead on behalf of the living?"

Go

Exodus 34:15
Do not make a covenant with the inhabitants of the land, lest they play the prostitute after their gods, and sacrifice to their gods, and one call you and you eat of his sacrifice;
Numbers 15:39
and it shall be to you for a fringe, that you may look on it, and remember all the commandments of the LORD, and do them; and that you not follow after your own heart and your own eyes, after which you use to play the prostitute;
Psalm 73:27
For, behold, those who are far from you shall perish. You have destroyed all those who are unfaithful to you.
Ezekiel 6:9
Those of you that escape shall remember me among the nations where they shall be carried captive, how that I have been broken with their lewd heart, which has departed from me, and with their eyes, which play the prostitute after their idols: and they shall loathe themselves in their own sight for the evils which they have committed in all their abominations.
Hosea 4:12
My people consult with their wooden idol, and answer to a stick of wood. Indeed the spirit of prostitution has led them astray, and they have been unfaithful to their God.

General references

Exodus 22:18
"You shall not allow a sorceress to live.
Leviticus 18:29
"'For whoever shall do any of these abominations, even the souls that do them shall be cut off from among their people.
Leviticus 19:31
"'Do not turn to spirits of the dead, and do not inquire of familiar spirits, to be defiled by them. I am the LORD your God.
Leviticus 23:30
Whoever it is who does any manner of work in that same day, that person I will destroy from among his people.