And he made his son pass through the fire, and observed times, and used enchantments, and dealt with familiar spirits and wizards: he wrought much wickedness in the sight of the LORD, to provoke him to anger. Made his son pass through the fire - Consecrated him to Moloch.
Observed times - ועונן veonen; he practiced divination by the clouds; by observing their course at particular times, their different kinds, contrary directions, etc., etc.
Used enchantments - ונחש venichesh; he used incantations, spells, and charms.
Dealt with familiar spirits - ועשה אוב veasah ob; he was a necromancer; was a raiser of spirits, whom he endeavored to press into his service; he had a Python.
And wizards - וידענים veyiddeonim; the knowing ones, the white witches, and such like; see on Leviticus 19:26-31 (note), where most of these terms are particularly explained and illustrated.