What the Christian religion holds to be the truth about forgiveness—a truth embodied in the Atonement—is something quite distinct from both the propositions which have just been considered. The New Testament does not teach, with the naturalistic or the legal mind, that forgiveness is impossible; neither does it teach, with the sentimental or lawless mind, that it may be taken for granted. It teaches that forgiveness is mediated to sinners through Christ, and specifically through His death: in other words, that it is possible for God to forgive, but possible for God only through a supreme revelation of His love, made at infinite cost, and doing justice to the uttermost to those inviolable relations in which alone, as I have already said, man can participate in eternal life, the life of God Himself—doing justice to them as relations in which there is an inexorable divine reaction against sin, finally expressing itself in death. It is possible on these terms, and it becomes actual as sinful men open their hearts in penitence and faith to this marvellous revelation, and abandon their sinful life unreservedly to the love of God in Christ who died for them.

From this point of view it seems to me possible to present in a convincing and persuasive light some of the truths involved in the Atonement to which the modern mind is supposed to be specially averse.

Thus it becomes credible—we say so not à priori, but after experience—that there is a divine necessity for it; in other words, there is no forgiveness possible to God without it: if He forgives at all, it must be in this way and in no other. To say so beforehand would be inconceivably presumptuous, but it is quite another thing to say so after the event. What it really means is that in the very act of forgiving sin—or, to use the daring word of St. Paul, in the very act of justifying the ungodly—God must act in consistency with His whole character. He must demonstrate Himself to be what He is in relation to sin, a God with whom evil cannot dwell, a God who maintains inviolate the moral constitution of the world, taking sin as all that it is in the very process through which He mediates His forgiveness to men.

It is the recognition of this divine necessity—not to forgive, but to forgive in a way which shows that God is irreconcilable to evil, and can never treat it as other or less than it is—it is the recognition of this divine necessity, or the failure to recognise it, which ultimately divides interpreters of Christianity into evangelical and non-evangelical, those who are true to the New Testament and those who cannot digest it.

No doubt the forms in which this truth is expressed are not always adequate to the idea they are meant to convey, and if we are only acquainted with them at second hand they will probably appear even less adequate than they are. When Athanasius, e.g., speaks of God's truth in this connection, and then reduces God's truth to the idea that God must keep His word—the word which made death the penalty of sin—we may feel that the form only too easily loses contact with the substance. Yet Athanasius is dealing with the essential fact of the case, that God must be true to Himself, and to the moral order in which men live, in all His dealings with sin for man's deliverance from it; and that He has been thus true to Himself in sending His Son to live our life and to die our death for our salvation. Or again, when Anselm in the Cur Deus Homo speaks of the satisfaction which is rendered to God for the infringement of His honour by sin—a satisfaction apart from which there can be no forgiveness—we may feel again, and even more strongly, that the form of the thought is inadequate to the substance. But what Anselm means is that sin makes a real difference to God, and that even in forgiving God treats that difference as real, and cannot do otherwise. He cannot ignore it, or regard it as other or less than it is; if He did so, He would not be more gracious than He is in the Atonement, He would cease to be God. It is Anselm's profound grasp of this truth which, in spite of all its inadequacy in form, and of all the criticism to which its inadequacy has exposed it, makes the Cur Deus Homo the truest and greatest book on the Atonement that has ever been written. It is the same truth of a divine necessity for the Atonement which is emphasised by St. Paul in the third chapter of Romans, where he speaks of Christ's death as a demonstration of God's righteousness. Christ's death, we may paraphrase his meaning, is an act in which (so far as it is ordered in God's providence) God does justice to Himself. He does justice to His character as a gracious God, undoubtedly, who is moved with compassion for sinners: if He did not act in a way which displayed His compassion for sinners, He would not do justice to Himself; there would be no [Greek] endeixis of His [Greek] dikaiosune: it would be in abeyance: He would do Himself an injustice, or be untrue to Himself. It is with this in view that we can appreciate the arguments of writers like Diestel and Ritschl, that God's righteousness is synonymous with His grace. Such arguments are true to this extent, that God's righteousness includes His grace. He could not demonstrate it, He could not be true to Himself, if His grace remained hidden. We must not, however, conceive of this as if it constituted on our side a claim upon grace or upon forgiveness: such a claim would be a contradiction in terms. All that God does in Christ He does in free love, moved with compassion for the misery and doom of men. But though God's righteousness as demonstrated in Christ's death—in other words, His action in consistency with His character—includes, and, if we choose to interpret the term properly, even necessitates, the revelation of His grace, it is not this only—I do not believe it is this primarily—which St. Paul has here in mind. God, no doubt, would not do justice to Himself if He did not show His compassion for sinners; but, on the other hand—and here is what the apostle is emphasising—He would not do justice to Himself if He displayed His compassion for sinners in a way which made light of sin, which ignored its tragic reality, or took it for less than it is. In this case He would again be doing Himself injustice; there would be no demonstration that He was true to Himself as the author and guardian of the moral constitution under which men live; as Anselm put it, He would have ceased to be God. The apostle combines the two sides. In Christ set forth a propitiation in His blood—in other words, in the Atonement in which the sinless Son of God enters into the bitter realisation of all that sin means for man, yet loves man under and through it all with an everlasting love—there is an [Greek] endeixis of God's righteousness, a demonstration of His self-consistency, in virtue of which we can see how He is at the same time just Himself and the justifier of him who believes on Jesus, a God who is irreconcilable to sin, yet devises means that His banished be not expelled from Him. We may say reverently that this was the only way in which God could forgive. He cannot deny Himself, means at the same time He cannot deny His grace to the sinful, and He cannot deny the moral order in which alone He can live in fellowship with men; and we see the inviolableness of both asserted in the death of Jesus. Nothing else in the world demonstrates how real is God's love to the sinful, and how real the sin of the world is to God. And the love which comes to us through such an expression, bearing sin in all its reality, yet loving us through and beyond it, is the only love which at once forgives and regenerates the soul.

It becomes credible also that there is a human necessity for the Atonement: in other words, that apart from it the conditions of being forgiven could no more be fulfilled by man than forgiveness could be bestowed by God.

There are different tendencies in the modern mind with regard to this point. On the one hand, there are those who frankly admit the truth here asserted. Yes, they say, the Atonement is necessary for us. If we are to be saved from our sins, if our hearts are to be touched and won by the love of God, if we are to be emancipated from distrust and reconciled to the Father whose love we have injured, there must be a demonstration of that love so wonderful and overpowering that all pride, alienation and fear shall be overcome by it; and this is what we have in the death of Christ. It is a demonstration of love powerful enough to evoke penitence and faith in man, and it is through penitence and faith alone that man is separated from his sins and reconciled to God. A demonstration of love, too, must be given in act; it is not enough to be told that God loves: the reality of love lies in another region than that of words. In Christ on His cross the very thing itself is present, beyond all hope of telling wonderful, and without its irresistible appeal our hearts could never have been melted to penitence, and won for God. On the other hand, there are those who reject the Atonement on the very ground that for pardon and reconciliation nothing is required but repentance, the assumption being that repentance is something which man can and must produce out of his own resources.

On these divergent tendencies in the modern mind I should wish to make the following remarks.

First, the idea that man can repent as he ought, and whenever he will, without coming under any obligation to God for his repentance, but rather (it might almost be imagined) putting God under obligation by it, is one to which experience lends no support. Repentance is an adequate sense not of our folly, nor of our misery, but of our sin: as the New Testament puts it, it is repentance toward God. It is the consciousness of what our sin is to Him: of the wrong it does to His holiness, of the wound which it inflicts on His love. Now such a consciousness it is not in the power of the sinner to produce at will. The more deeply he has sinned, the more (so to speak) repentance is needed, the less is it in his power. It is the very nature of sin to darken the mind and harden the heart, to take away the knowledge of God alike in His holiness and in His love. Hence it is only through a revelation of God, and especially of what God is in relation to sin, that repentance can be evoked in the soul. Of all terms in the vocabulary of religion, repentance is probably the one which is most frequently misused. It is habitually applied to experiences which are not even remotely akin to true penitence. The self-centred regret which a man feels when his sin has found him out—the wish, compounded of pride, shame, and anger at his own inconceivable folly, that he had not done it: these are spoken of as repentance. But they are not repentance at all. They have no relation to God. They constitute no fitness for a new relation to Him. They are no opening of the heart in the direction of His reconciling love. It is the simple truth that that sorrow of heart, that healing and sanctifying pain in which sin is really put away, is not ours in independence of God; it is a saving grace which is begotten in the soul under that impression of sin which it owes to the revelation of God in Christ. A man can no more repent than he can do anything else without a motive, and the motive which makes evangelic repentance possible does not enter into his world till he sees God as God makes Himself known in the death of Christ. All true penitents are children of the Cross. Their penitence is not their own creation: it is the reaction towards God produced in their souls by this demonstration of what sin is to Him, and of what His love does to reach and win the sinful.

The other remark I wish to make refers to those who admit the death of Christ to be necessary for us—necessary, in the way I have just described, to evoke penitence and trust in God—but who on this very ground deny it to be divinely necessary. It had to be, because the hard hearts of men could not be touched by anything less moving: but that is all. This, I feel sure, is another instance of those false abstractions to which reference has already been made. There is no incompatibility between a divine necessity and a necessity for us. It may very well be the case that nothing less than the death of Christ could win the trust of sinful men for God, and at the same time that nothing else than the death of Christ could fully reveal the character of God in relation at once to sinners and to sin. For my own part I am persuaded, not only that there is no incompatibility between the two things, but that they are essentially related, and that only the acknowledgment of the divine necessity in Christ's death enables us to conceive in any rational way the power which it exercises over sinners in inducing repentance and faith. It would not evoke a reaction Godward unless God were really present in it, that is, unless it were a real revelation of His being and will: but in a real revelation of God's being and will there can be nothing arbitrary, nothing which is determined only from without, nothing, in other words, that is not divinely necessary. The demonstration of what God is, which is made in the death of Christ, is no doubt a demonstration singularly suited to call forth penitence and faith in man, but the necessity of it does not lie simply in the desire to call forth penitence and faith. It lies in the divine nature itself. God could not do justice to Himself, in relation to man and sin, in any way less awful than this; and it is the fact that He does not shrink even from this—that in the Person of His Son He enters, if we may say so, into the whole responsibility of the situation created by sin—which constitutes the death of Jesus a demonstration of divine love, compelling penitence and faith. Nothing less would have been sufficient to touch sinful hearts to their depths—in that sense the Atonement is humanly necessary; but neither would anything else be a sufficient revelation of what God is in relation to sin and to sinful men—in that sense it is divinely necessary. And the divine necessity is the fundamental one. The power exercised over us by the revelation of God at the Cross is dependent on the fact that the revelation is true—in other words, that it exhibits the real relation of God to sinners and to sin. It is not by calculating what will win us, but by acting in consistency with Himself, that God irresistibly appeals to men. We dare not say that He must be gracious, as though grace could cease to be free: but we may say that He must be Himself, and that it is because He is what we see Him to be in the death of Christ, understood as the New Testament understands it, that sinners are moved to repentance and to trust in Him. That which the eternal being of God made necessary to Him in the presence of sin is the very thing which is necessary also to win the hearts of sinners. Nothing but what is divinely necessary could have met the necessities of sinful men.