“Faith” in this context is not the faith by which we believe, but rather the objective sense, the faith in which we believe, the content of our beliefs. By “Catholic,” is meant not, what many people say, universal, but the word really comes from the Greek kata holon, according to the whole. So “Catholic Faith” means the whole Christian faith, not just picking and choosing what parts we like and rejecting what we don’t like, as if we had the right to pass judgment on the Faith. Rather, it means accepting the whole Christian faith, even–especially–the parts we aren’t particularly fond of. St. Paul refers to this acceptance as “not following cleverly devised myths,” but handing on what we have received.