The cultivation of these virtuous habits begins in the home. The family depends on, and reflects, the virtues. It is just to honor our spouse and care for our children. Prudence helps us provide for them. Moderation and fortitude help us stick together through difficult times.
Society also supports the virtues through schools, churches, and, to some extent, manners.
In passing and enforcing laws, it has no direct role. But government does support private virtue through laws preserving the family and the private sector. The Founders did not believe government should, or could, avoid moral distinctions. Nor did they think morality could be imposed directly by law. Citizens must exercise self-restraint, responsibility and civility on their own to keep government in check.