Seeberg remarks: "Flacius was not a heretic, but in the wrangle of his day he was branded as such, and this has been frequently repeated." (4, 2, 495.) A similar verdict is passed by Gieseler and other historians. But whatever may be said in extenuation of his error, it cannot be disputed that the unfortunate phrases of Flacius produced, and were bound to produce, most serious religious offense, as well as theological strife, and hopeless doctrinal confusion. Even when viewed in the light of his distinction between formal substance (man as endowed with the image of God) and material substance (man as possessed of body and soul, together with will and intellect), the odiousness of his terminology is not entirely removed. It was and remained a form of doctrine and trope or mode of teaching which the Lutherans were no more minded to tolerate than the error of Strigel.
Accordingly, the first article of the Formula of Concord rejects both the synergistic as well as the Manichean aberrations in the doctrine of original sin. In its Thorough Declaration we read: "Now this doctrine [of original sin] must be so maintained and guarded that it may not deflect either to the Pelagian or the Manichean side. For this reason the contrary doctrine … should also be briefly stated." (865, 16.) Accordingly, in a series of arguments, the Flacian error is thoroughly refuted and decidedly rejected. At the same time the Formula of Concord points out the offensiveness of the Flacian phraseology. It refers to the controversy regarding this question as "scandalous and very mischievous," and declares: "Therefore it is unchristian and horrible to hear that original sin is baptized in the name of the Holy Trinity, sanctified, and saved, and other similar expressions found in the writings of the recent Manicheans, with which we will not offend simple-minded people." (873, 45. 59.)
On the other hand, the Formula of Concord is just as determined in opposing every effort at extenuating the corruption wrought by original sin. It is solicitous to explain that in designating original sin as an accident, its corruption is not minimized in the least, if the answer concerning the nature of this accident is not derived from philosophy or human reason, but from the Holy Scriptures. "For the Scriptures," says the Formula, "testify that original sin is an unspeakable evil and such an entire corruption of human nature that in it and all its internal and external powers nothing pure or good remains, but everything is entirely corrupt, so that on account of original sin man in God's sight is truly spiritually dead (plane sit emortuus), with all his powers dead to that which is good." (879, 60.)
Accordingly, the Formula of Concord rejects the errors of Strigel and the Semi-Pelagians, "that original sin is only external, a slight, insignificant spot sprinkled, or a stain dashed, upon the nature of man … along with and beneath which the nature nevertheless possesses and retains its integrity and power even in spiritual things. Or that original sin is not a despoliation or deficiency, but only an external impediment to these spiritual good powers…. They are rebuked and rejected likewise who teach that the nature has indeed been greatly weakened and corrupted through the Fall, but that nevertheless it has not entirely lost all good with respect to divine, spiritual things, and that what is sung in our churches, 'Through Adam's fall is all corrupt, nature and essence human,' is not true, but from natural birth it still has something good, small, little, and inconsiderable though it be, namely, capacity, skill, aptness, or ability to begin, to effect, or to help effect something in spiritual things." (865, 21ff.)
While the Formula of Concord does not deny the capacity of fallen man for salvation, it is careful in defining that this is not an active, but a passive capacity. That is to say: Man is utterly incapable of qualifying himself for, or of contributing in the least toward, his own spiritual restoration; but what is impossible for man is not impossible with God who, indeed, is able to convert man, endow him with new spiritual powers, and lead him to eternal salvation,—a goal for the attainment of which, in contradistinction from inanimate and other creatures, man, being a rational creature, endowed with intellect and will, was created by God and redeemed by Christ. In the Formula of Concord we read: "And although God, according to His just, strict sentence, has utterly cast away the fallen evil spirits forever, He has nevertheless, out of special, pure mercy, willed that poor fallen human nature might again become and be capable and participant of conversion, the grace of God, and eternal life; not from its own natural, active [or effective] skill, aptness, or capacity (for the nature of man is obstinate enmity against God), but from pure grace, through the gracious efficacious working of the Holy Ghost. And this Dr. Luther calls capacitatem (non activam, sed passivam), which he explains thus: Quando patres liberum arbitrium defendunt, capacitatem libertatis eius praedicant, quod scilicet verti potest ad bonum per gratiam Dei et fieri revera liberum, ad quod creatum est. That is: When the Fathers defend the free will, they are speaking of this, that it is capable of freedom in this sense, that by God's grace it can be converted to good, and become truly free, for which it was created in the beginning." (889, 20.)
This accords with Luther's words in De Servo Arbitrio: "It would be correct if we should designate as the power of free will that [power] by which man, who is created for life or eternal death, is apt to be moved by the Spirit and imbued with the grace of God. For we, too, confess this power, i.e., aptitude or, as the Sophists [Scholastic theologians] say, disposition and passive aptitude. And who does not know that trees and animals are not endowed with it? For, as the saying goes, heaven is not created for geese. Hanc enim vim, hoc est, aptitudinem, seu, ut Sophistae loquuntur, dispositivam qualitatem et passivam aptitudinem, et nos confitemur; quam non arboribus neque bestiis inditam esse, quis est, qui nesciat? Neque enim pro anseribus, ut dicitur, coelum creavit." (E. v. a. 158: St. L. 18. 1720.)
XVI. The Osiandrian and Stancarian Controversies.
175. Osiander in Nuernberg and in Koenigsberg.
In the writings of Luther we often find passages foreboding a future corruption of the doctrine of justification, concerning which he declared in the Smalcald Articles: "Of this article nothing can be yielded or surrendered, even though heaven and earth, and whatever will not abide, should sink to ruin…. And upon this article all things depend which we teach and practise in opposition to the Pope, the devil, and the world. Therefore we must be sure concerning this doctrine, and not doubt, for otherwise all is lost, and the Pope and devil and all things gain the victory and suit over us." (461, 5.) Martin Chemnitz remarks: "I frequently shudder, because Luther—I do not know by what kind of presentiment—in his commentaries on the Letter to the Galatians and on the First Book of Moses so often repeats the statement: 'This doctrine [of justification] will be obscured again after my death.'" (Walther, Kern und Stern, 26.)
Andrew Osiander was the first to fulfil Luther's prophecy. In 1549 he began publicly to propound a doctrine in which he abandoned the forensic conception of justification by imputation of the merits of Christ, and returned to the Roman view of justification by infusion i.e., by infusion of the eternal essential righteousness of the divine nature of Christ. According to his own statement, he had harbored these views ever since about 1522. He is said also to have presented them in a sermon delivered at the convention in Smalcald, 1537. (Planck 4, 257.) Yet he made no special effort to develop and publicly to disseminate his ideas during the life of Luther. After the death of the Reformer, however, Osiander is reported to have said: "Now that the lion is dead, I shall easily dispose of the foxes and hares"—i.e., Melanchthon and the other Lutheran theologians. (257.) Osiander was the originator of the controversy "Concerning the Righteousness of Faith before God," which was finally settled in Article III of the Formula of Concord.