Joshua 23:6-7

6And be ye very courageous to keep and to do all that is written in the book of the law of Moses, that ye turn not aside therefrom to the right hand or to the left;

7that ye enter not among these nations, these that remain among you; and ye shall make no mention of the name of their 1gods, nor cause to swear [by them], neither serve them, nor bow yourselves unto them;