Scripture says that there are two kinds of faith, saving and non-saving. So how can a person know if he has the faith that saves? This is what the great Scottish preacher John Colquhoun addresses in this scarce title. Where does saving faith some from? What are the objects of it? What does it mean to trust savingly in Christ? What are the fruits of saving faith? What are the differences between true and counterfeit faith? These are a few of the questions that Colquhoun discusses in this important work. Rather than pushing us to introspection, the author takes us to Scripture for our answers. And that is the only reliable source for us.