“God says in the law: Do this, leave that undone, this do I require of thee. But the Evangel does not preach what we are to do or to leave undone, it requires nothing of us. On the contrary. It does not say: Do this or that, but only tells us to hold out our hands and take: Behold, O man, what God has done for thee; He has caused His own Son to take flesh for thee, has allowed Him to be done to death for thy sake, and to save thee from sin, death and the devil; believe this and accept it and thou shalt be saved.”[527]

Such statements, which must not be regarded as spoken merely on the spur of the moment, rest on the idea that sin only troubles the man who looks to the law; let us look rather to the Gospel, which is nothing but grace, and simply cover over our sin by a firm faith in Christ, then it will not harm us in any way. Yet it would be quite a mistake to infer from this that Luther always regarded sin with indifference, or that he even recommended it on principle; as a rule he did not go so far as we just saw him do (p. 175 ff.) in his exhortations to persons tempted; there, moreover, his invitation to commit sin, and his other misplaced instructions, may possibly be explained by the excitement of the hand-to-hand struggle with the devil, in which he fancied himself to be engaged whenever he had to do with doubts concerning his doctrines, or with souls showing signs of halting or of despair. On the contrary, he teaches, as a rule, that sin is reprehensible; he also instructs man to fight against concupiscence which leads up to it. (Vol. i., p. 114 f.) He is fond of exhorting to amendment of life and to avoid any scandal. Still, the barriers admitted by his doctrine of Justification against this indifference with regard to sin were not strong enough.[528]

As to Luther’s teaching on the manner in which sin was forgiven, we shall merely state his ideas on this subject, without attempting to bring them into harmony; the fact is that, in Luther’s case, we must resign ourselves to a certain want of sequence.

He teaches: “Real faith is incompatible with any sin whatsoever; whoever is a believer must resist sinful lusts by the power and the impulse of the faith and Spirit.”[529] “Whoever has faith in the forgiveness of sins does not obey sinful lusts, but fights against them until he is rid of them.”[530] Where mortal sin has been committed, there, according to him, real faith was manifestly lacking; it had already been denied and was no longer active, or even present. A revival of faith, together with the necessary qualities of confidence, covers over all such sins, including the sin of unbelief. On the other hand, sins committed where faith was present, though for the moment too weak to offer resistance, were sins of frailty; there faith at once regains the upper hand and thus forgiveness or non-imputation of the sin is secured. The denial of Peter was, according to Luther, a sin of frailty, because it was merely due to “chance weakness and foolishness.” Nevertheless he declares that, like the treason of Judas, it was deserving of death.[531]

Luther teaches further, affording us incidentally an insight into the inadequacy of his doctrine from another point of view, that, in the case of the heathen or of Christians who had no faith, not only was every sin a mortal sin, but also all works, even good works, were mortal sins; indeed, they would be so even in the faithful, were it not for Christ, the Redeemer, Whom we must cling to with confidence. Moreover, as we know, man’s evil inclinations, the motions of concupiscence, the bad tendencies of the pious, were all grievous sins in Luther’s eyes; original sin with its involuntary effects he considers an enduring offence; only faith, which merits forgiveness and overcomes the terrors of conscience by the saving knowledge of Christ, can ensure man against it, and the other sins.

“Thus our salvation or rejection depends entirely on whether we believe or do not believe in Christ.... Unbelief retains all sin, so that it cannot be forgiven, just as faith cancels all sin; hence outside of such faith everything is and remains sinful and worthy of damnation, even the best of lives, and the best of works.... In faith a Christian’s life and works are pleasing to God, outside of Christ everything is lost and doomed to perdition; in Christ all is good and blessed, so that even the sin which flesh and blood inherits from Adam is neither a cause of harm nor of condemnation.” “This, however, is not to be understood as a permit to sin and to commit evil; for since faith brings forgiveness of sin ... it is impossible that he who lives openly unrepentant and secure in his sins and lusts should be a Christian and a believer.”[532] In conclusion he explains to what category of hearers he is speaking: “To them [the faithful] this is said, in order that sin may not harm nor condemn them; to the others, who are without faith and reprobate, we do not preach.”[533] Amongst the numerous other questions which here force themselves upon us, one is, why Luther did not address his Evangel to those “without faith,” and to the “reprobate,” according to the example of Christ.[534]

The fanatics, particularly Carlstadt, were not slow in attacking Luther on account of his doctrine of faith alone. Carlstadt described this “faith” of Luther’s as a “paper faith” and a “heartless faith.” He perceived the “dangers to the interior life which might arise from the stress laid on faith alone, viz. the enfeebling of the moral powers and the growth of formalism.”[535] The modern Protestant biographer of Carlstadt, from whom these words are taken, points out that “moral laxity too often went hand-in-hand with Luther’s doctrine of the forgiveness of sins.”[536] “Owing to an assiduous depreciation of the moral code no criterion existed according to which the direction of the impulses of the will could be determined, according to Luther’s doctrine of Justification.”[537] The Lutheran teaching was “admirably adapted to suit the life of the individual,” but the moral laxity which followed in its train “could not be considered as merely an exceptional phenomenon.”[538] There is no doubt that “much dross came to the surface when ‘faith only’ was applied to the forgiveness of sins.”[539]

A Protestant theologian, A. Hegler, one of those who demur to Luther’s doctrines, mentioned above, owing to their moral consequences, remarks: “It remains that the idea of justification without works was, at the time of the Reformation, often found side by side with moral laxity, and that, sometimes, the latter was actually the effect of the former.” Seeking the reason why so talented a man as Sebastian Franck should have seceded, after having been a Lutheran preacher till 1528, he remarks: “There is much to lead us to suppose that the sight of the moral indifference and coarseness of the evangelicals was the determining factor.”[540]

After having considered Luther’s principles with regard to the theory of sin, we now proceed to give some of his utterances on penance.

Luther’s Views on Penance