Going in the ways of the law
You shall do my ordinances and keep my statues, to go [literally walk] in their ways.
My grandfather takes this as an injunction to keep the spirit of the law even when there is no direct indicator of the letter of the law. Focusing on לָלֶכֶת בָּהֶם, he says, It appears to me that itis to go accoridng to the intention of the Torah in all actions that one does even if according to the explicit commandment, there is no mitzvah directly indicated.
Related post http://kallahmagazine.blogspot.com/2015/10/dvar-yehudah-parsha-points-from-my.html