Faith is nearly equivalent to trust. To have faith in a person is to put your trust in them. To have faith in a belief is to trust that it is true. Whether or not faith is good depends on whether or not the trust is justified. Why do you trust? Do you have good reason to trust?
Dogmatic faith is never good because it is anti-reason by definition. Virians tend to shy away from using the word to describe their own beliefs because it has connotations of dogma.