Exodus Chapter 23, Verse 13
From BibleWiki
13: And in all things that I have said unto you be circumspect:
and make no mention of the name of other gods, neither let it
be heard out of thy mouth.
13: Keep all things that I have said to you. And by the name of
strange gods you shall not swear, neither shall it be heard out of your
mouth.
13: Observe all things whatsoever I have commanded yo; and ye shall make no mention of the name of other gods, neither shall they be heard out of your mouth.
Exodus Chapter 23, Verse 13/commentary

