Ibn Ezra on Exodus 23:13/אבן עזרא על שמות כ״ג:י״ג

1AND IN ALL THINGS THAT I HAVE SAID UNTO YOU TAKE YE HEED. Scripture now mentions idolatry. And in all things that I have said unto you refers to God’s commandments and ordinances. Observe them, not the ordinances of other gods. Scripture says, and make no mention of the name of other gods ; that is, do not mention their names in any oath or cause their adherents to swear by their names. The precise meaning of neither let it be heard out of thy mouth is: you shall not cause others to swear by their names; that is, do not tell an idolater, “Swear to me by your god.”