Let us, therefore, hold fast to this which the Church confesses, namely, that we are saved by mercy. And lest any one may here think: "If we are to be saved by mercy, hope will be uncertain, if in those who obtain salvation nothing precedes by which they may be distinguished from those who do not obtain it," we must give him a satisfactory answer. For the scholastics, moved by this reason, seem to have devised the _meritum condigni_. For this consideration can greatly exercise the human mind. We will therefore reply briefly. For the very reason that hope may be sure, for the very reason that there may be an antecedent distinction between those who obtain salvation, and those who do not obtain it, it is necessary firmly to hold that we are saved by mercy. When this is expressed thus unqualifiedly, it seems absurd. For in civil courts and in human judgment, that which is of right or of debt is certain, and mercy is uncertain. But the matter is different with respect to God's judgment; for here mercy has a clear and certain promise and command from God. For the Gospel is properly that command which enjoins us to believe that God is propitious to us for Christ's sake. For God sent not His Son into the world to condemn the world, but that the world through Him might be saved, John 3, 17. 18. As often, therefore, as mercy is spoken of, faith in the promise must be added; and this faith produces sure hope, because it relies upon the Word and command of God. If hope would rely upon works, then, indeed, it would be uncertain, because works cannot pacify the conscience, as has been said above frequently. And this faith makes a distinction between those who obtain salvation, and those who do not obtain it. Faith makes the distinction between the worthy and the unworthy, because eternal life has been promised to the justified; and faith justifies.