Familiar spirits - See the notes on Leviticus 19:31; and Exodus 22:18 (note).

The soul that turneth after such as have familiar spirits,.... The man or woman that has respect unto them, seeks after them, and inquires of them, in order to get knowledge of things:

and after wizards who pretend to tell fortunes, and discover lost and stolen goods; see Gill on Leviticus 19:31,

to go a whoring after them; for to consult them is to forsake the Lord, and have recourse to Satan and his instruments; to relinquish their trust in God, and put confidence in them, and attribute such things to them as only belong to God, even the knowledge of things future; and this is to commit idolatry, which is spiritual adultery:

I will even set my face against that soul; show like resentment and indignation as at him that gives his seed to Molech:

and will cut him off from among his people; in case his people do not bear witness against him, but hide their eyes, and wink at his crimes, or the civil magistrate does not condemn and punish him; the Targum of Jonathan is,"I will destroy him by the pestilence.''

He would also do the same to every soul that turned to familiar spirits and necromantists (Leviticus 19:31, cf. Exodus 22:17), "to go a whoring after them," i.e., to make himself guilty of idolatry by so doing, such practices being always closely connected with idolatry.

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

(d) To esteem sorcerers or conjurers is spiritual whoredom, or idolatry.

20:6 To go a whoring - To seek counsel or help from them.

20:1-9 Are we shocked at the unnatural cruelty of the ancient idolaters in sacrificing their children? We may justly be so. But are there not very many parents, who, by bad teaching and wicked examples, and by the mysteries of iniquity which they show their children, devote them to the service of Satan, and forward their everlasting ruin, in a manner even more to be lamented? What an account must such parents render to God, and what a meeting will they have with their children at the day of judgment! On the other hand, let children remember that he who cursed father or mother was surely put to death. This law Christ confirmed. Laws which were made before are repeated, and penalties annexed to them. If men will not avoid evil practices, because the law has made these practices sin, and it is right that we go on that principle, surely they should avoid them when the law has made them death, from a principle of self-preservation. In the midst of these laws comes in a general charge, Sanctify yourselves, and be ye holy. It is the Lord that sanctifies, and his work will be done, though it be difficult. Yet his grace is so far from doing away our endeavours, that it strongly encourages them. Work out your salvation, for it is God that worketh in you.