Be very strong, then, so that you can keep and obey all that is written in the Book of the Law of Moses, not turning aside from it to the right or to the left.
KJV
Be ye therefore 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;
ASV
Therefore 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;