And thou shall not go aside from any of the words which I
command thee this day
Depart from them as a rule to walk by, turn out from them as a path to walk in, neglect and disobey them, and go into practices contrary to them: turning [to] the right hand or to the left, to go after other gods to serve
them;
which to do was to break the first and principal table of the law, than which nothing was more abominable and provoking to God.
The Brenton translation of the Septuagint is in the public domain.