We must note the foundations. For we are justified by faith, not because it is so firm, robust, and perfect a virtue, but because of the object on which it lays hold, namely Christ, who is the Mediator in the promise of grace. Therefore when faith does not err in its object, but lays hold on that true object, although with a weak faith, or at least tries and wants to lay hold on Christ, then there is true faith, and it justifies. The reason for this is demonstrated in those lovely statements in Phil.