Leviticus 19:4

Turn not your hearts and faces from me, whom alone you pretend to respect, unto them. He intimates, that their turning to idols is a turning from God, and that they could not serve both God and idols. Unto idols: the word signifies such as are no gods, or nothings, as they are called, 1 Corinthians 8:4, many idols having no being, but only in the fancy of their worshippers, and all of them having no virtue or power to do good or evil, Isaiah 41:23. Molten gods, nor graven gods neither, as appears from Exo 20, whereby we learn that such expressions are generally to be understood synecdochically.