Honestly the CSL definition is I think one of the best for faith. I think though that the lived definition of faith is as trust in God. Because most Christians, me included, would not say that hey believe in God without any evidence at all. The evidence is experiential, feeling forgiven, feeling loved, or some other deeply personal moment. Those moments may not be proof that you can take to a wider society or really anyone who has not had them but they are very real to those who experience them.