He sacrificed his own son in the fire, practiced sorcery and divination, and consulted mediums and spiritists. He did great evil in the sight of the LORD, provoking Him to anger.
Jewish Publication Society of America Version (JPS1917) - 2 Kings 21:6 >And he made his son to pass through the fire, and practised soothsaying, and used enchantments, and appointed them that divined by a ghost or a familiar spirit: he wrought much evil in the sight of the LORD, to provoke Him.