1 Kings 11:3

Now king Solomon loved many foreign women, together with the daughter of Pharaoh, women of the Moabites, Ammonites, Edomites, Sidonians, and Hittites;

of the nations concerning which Yahweh said to the children of Israel, "You shall not go among them, neither shall they come among you; for surely they will turn away your heart after their gods." Solomon joined to these in love.

For it happened, when Solomon was old, that his wives turned away his heart after other gods; and his heart was not perfect with Yahweh his God, as was the heart of David his father.

For Solomon went after Ashtoreth the goddess of the Sidonians, and after Milcom the abomination of the Ammonites.