If we were to think of moral theology only in such terms, our view of it would be dreadfully incomplete. We would be like basketball players who think that being a good player means that you don't foul, you don't double-dribble, and you don't step out of bounds. There is so much more to the game than not breaking the rules. And there is so much more to moral theology than not breaking the commandments. Moral theology is not just about the evil we should avoid doing, but about the good that we should strive for.
Moral theology is about growing in virtue and spiritual perfection.
At the same time, the Sermon on the Mount demonstrates the openness of the commandments and their orientation towards the horizon of the perfection proper to the Beatitudes. Both the beatitudes and commandments guide us toward the possession of eternal life. Also, it is helpful to see the Beatitudes in the form of promises. But it is certain that the young man's commitment to respect all the moral demands of the commandments represents the absolutely essential ground in which the desire for perfection can take root and mature, the desire, that is, for the meaning of the commandments to be completely fulfilled in following Christ. Another very important point here.