In Exodus 23:13 we read the following prohibition against pronouncing the names of false gods:
Concerning all that I have said to you you shall beware, and the name of the gods of others you shall not mention; it shall not be heard through your mouth.
Yet in texts like Leviticus 18:21 the name of a false god is used:
And you shall not give any of your offspring to pass through for Molech. And you shall not profane the Name of your God. I am the Lord.
When reading from a sefer Torah in shul we freely pronounce this name.
So my question is how would I explain to a non Jew why it is OK to pronounce the name of a false god when reading from a sefer Torah in shul but not in everyday conversation?