Whereas the Church had required faith in our real, objective redemption by Christ, Luther demanded over and above a further faith in one’s subjective redemption, in spite of the difficulty which circumstances might present to the attaining of this assurance. It was something very different when the olden theologians taught that there were signs from which the good man’s state of grace might be inferred with moral certainty, and that such signs were, for instance, the determination to commit no grievous sin, the desire to perform good works more especially such as were difficult, joy and peace of soul in God, and, above all, the consciousness of having done everything that was necessary for reconciliation with God. That, by such marks, it was “possible to arrive at the practical certainty of being in a state of grace” had been taught by Gabriel Biel, with whom Luther was acquainted.[1567] Later on, the Council of Trent laid down as the Catholic doctrine, against the Lutheran theory of absolute faith in personal justification, “that no good Christian may doubt of the mercy of God, of the merits of Christ or the efficacy of grace,” but that at the same time “no one can know with the certainty of faith which precludes all possibility of error that he has attained to God’s grace.”[1568]

Luther’s teaching was quite different.

He writes, for instance, in the larger Commentary on Galatians, which, as we know, he regarded next to his work “De servo arbitrio” as his principal legacy to posterity: “We must perceive and recognise it as certain that we are the temple of the Holy Ghost.”[1569] “The heart must be quite certain that it is in a state of grace and that it has the Holy Ghost.”[1570] It is true, he says, that, “because we feel the opposite sentiments of fear, doubt, sadness, etc., we fail to regard this as certain.”[1571] Yet do this we must: “We must day by day struggle (‘luctari’)[1572] towards greater and greater certainty.” We should exercise ourselves in the feeling of certainty, risk something to secure it; for it rests with our own self-acquired ability to believe ever firmly and steadfastly, even as we believe the truths of faith, that we are really justified. All depends on the practice and experience just referred to. “This matter, if it is to be achieved, cannot be learnt without experience. Everyone should therefore accustom himself resolutely to the persuasion that he is in a state of grace and that his person and deeds are pleasing [to God]. Should he feel a doubt, then let him exercise faith; he must beat down his doubts and acquire certainty, so as to be able to say: I know that I am pleasing [to God] and have the Holy Ghost, not on account of any worth or merits of my own, but on account of Christ, Who for our sakes submitted Himself to the law and took away the sins of the world. In Him I believe.”[1573] “The greatest art consists in this, that, regardless of the fact that we commit sin, we can yet say to the law: I am sinless.”[1574]

“And even when we have fought very hard for this, it will still cost us much sweat.”

It is thus that Luther was led to speak from his own inner experience, of which we have plentiful corroboration. In the passage last quoted, he proceeds: “The matter of justification is difficult and delicate (‘causa iustificationis lubrica est’), not indeed in itself, for in itself it is as certain as can be, but in our regard; of this I have frequent experience.”[1575]

We are already acquainted to some extent with the struggle against himself, and the better voices within him, which the unhappy man had to wage; this distress of soul remains to be treated of more in detail later (vol. v., xxxii.). It may, however, be pointed out here that he knew how to make this struggle part of his system; even when depressed by one’s painful inability to reach this unshaken consciousness of salvation he still insists that one must feel certain; faced by doubts and fears on account of his sins, man must summon defiance to his aid, then, finally, he will come to rest secure of his personal salvation.

“We must cling with all sureness to the belief that not merely our office but also our person is well-pleasing to God.”[1576] It is true that men see, “how weak is the faith even of the pious. We would assuredly joyfully give thanks to God for His unspeakable gift could we but say with entire certainty: Yes, indeed, I am in a state of grace, my sin is forgiven me, I have the Spirit of Christ and I am the son of God. We feel, however, in ourselves emotions quite contrary, viz. fear, doubt, sadness, etc., hence we do not venture to make the assertion.”[1577] Others might infer from this the uselessness of all such vain efforts. Luther, however, would not be the man he is were he not to declare: On the contrary, “we must daily struggle more and more from uncertainty to certainty!” “Christ Himself,” so he argues, “is quite certain in His Spirit that He is pleasing to God.... Hence we too, seeing that we have the Spirit of Christ, must be certain that we too stand in grace ... on account of Him Who is certain.”[1578]

The last argument is the more noteworthy in that it demonstrates so well the vicious circle involved in Luther’s conclusion.

It amounts to this: In order to possess grace and reconciliation you must believe that you have grace and reconciliation. What guarantee has one of the certainty of this belief? Nothing but the inward consciousness to be evolved in the soul that it has indeed the grace of Christ which covers over all that is evil in it.