Charles Ellicott Commentary Leviticus 20:6

"And the soul that turneth unto them that have familiar spirits, and unto the wizards, to play the harlot after them, I will even set my face against that soul, and will cut him off from among his people." — Leviticus 20:6 (ASV)

And the soul that turns after such as have familiar spirits. —The same punishment will be inflicted upon the man who consults necromancers. For the nature of this sin, see Leviticus 19:31, and for the execution of this sentence see 1 Chronicles 10:13–14. The soothsayers themselves were stoned to death by the community. (See Leviticus 20:27.)