Therefore the doctrine of repentance, because it not only commands new works, but also promises the remission of sins, necessarily requires faith. For the remission of sins is not received unless by faith. Therefore, in those passages that refer to repentance, we should always understand that not only works, but also faith is required, as in Matt. 6, 14. For if ye forgive men their trespasses, your heavenly Father will also forgive you. Here a work is required, and the promise of the remission of sins is added which does not occur on account of the work, but through faith, on account of Christ. Just as Scripture testifies in many passages: Acts 10, 43: To Him give all the prophets witness that through His name, whosoever believeth in Him, shall receive remission of sins; and 1 John 2, 12: Your sins are forgiven you for His name's sake; Eph. 1, 7: In whom we have redemption through His blood the forgiveness of sins. Although what need is there to recite testimonies? This is the very voice peculiar to the Gospel, namely, that for Christ's sake, and not for the sake of our works, we obtain by faith remission of sins. Our adversaries endeavor to suppress this voice of the Gospel by means of distorted passages which contain the doctrine of the Law, or of works. For it is true that in the doctrine of repentance works are required, because certainly a new life is required. But here the adversaries wrongly add that by such works we merit the remission of sins, or justification. And yet Christ often connects the promise of the remission of sins to good works not because He means that good works are a propitiation, for they follow reconciliation; but for two reasons. One is, because good fruits must necessarily follow. Therefore He reminds us that, if good fruits do not follow the repentance is hypocritical and feigned. The other reason is, because we have need of external signs of so great a promise, because a conscience full of fear has need of manifold consolation. As, therefore, Baptism and the Lord's Supper are signs that continually admonish, cheer, and encourage desponding minds to believe the more firmly that their sins are forgiven, so the same promise is written and portrayed in good works, in order that these works may admonish us to believe the more firmly. And those who produce no good works do not excite themselves to believe, but despise these promises. The godly on the other hand, embrace them, and rejoice that they have the signs and testimonies of so great a promise. Accordingly, they exercise themselves in these signs and testimonies. Just as, therefore, the Lord's Supper does not justify us _ex opere operato_, without faith, so alms do not justify us without faith, _ex opere operato_.