I Kings 11:4-8

⁴For when Solomon was old, his wives turned his heart away after other gods; and his heart was not wholly devoted to the Lord his God, as the heart of David his father had been. ⁵For Solomon went after Ashtoreth the goddess of the Sidonians and after Milcom the detestable idol of the Ammonites. ⁶Solomon did what was evil in the sight of the Lord, and did not follow the Lord fully, as David his father had done. ⁷Then Solomon built a high place for Chemosh the detestable idol of Moab, on the mountain which is east of Jerusalem, and for Molech the detestable idol of the sons of Ammon. ⁸Thus also he did for all his foreign wives, who burned incense and sacrificed to their gods.