As human beings we tend to separate then regroup things. Yet God asks us to bring things together (see John 17). And so many ask themselves, how can we rely fully on grace if we do good works? How can we do good works if we rely on grace? And most importantly, if the path is that narrow, how can we know if we are truly saved? The answers are simple: we receive what we receive, do what we do and know what we believe is true because we are on the path of teshuvah. We know because we know.
God wants us to hear Him, to watch/worship Him, to remember the mitzvah (the instructions He has given us), receive ordinances, and study and live the Torah. And we do all these by grace. Yet there are still those that think there is a difference between grace and works.
Many say that the greatest gift God has given us is the Atonement of Christ. This makes sense, as it is this atonement that grants us the Grace that offers us salvation. However, until we accept it, this grace is merely that—and offering. Perhaps then, the greatest gift God has granted us is the freedom to choose for ourselves.