He sacrificed his sons in the fire in the Valley of Ben-hinnom. He practiced sorcery, divination, and witchcraft, and consulted mediums and spiritists. He did great evil in the sight of the LORD, provoking Him to anger.
KJV
And he caused his children to pass through the fire in the valley of the son of Hinnom: also he observed times, and used enchantments, and used witchcraft, and dealt with a familiar spirit, and with wizards: he wrought much evil in the sight of the LORD, to provoke him to anger.
ASV
He also made his children to pass through the fire in the valley of the son of Hinnom; and he practised augury, and used enchantments, and practised sorcery, and dealt with them that had familiar spirits, and with wizards: he wrought much evil in the sight of Jehovah, to provoke him to anger.