The second charge raised by Calvinists and Synergists against the Formula of Concord is its failure to harmonize "logically" what they term "contradictory doctrines": sola gratia and universalis gratia, —a stricture which must be characterized as flowing from rationalistic premises, mistaking a divine mystery for a real contradiction, and in reality directed against the clear Word of God itself. Says Schaff, who also in this point voices the views of Calvinists as well as Synergists: "The Formula of Concord sanctioned a compromise between Augustinianism and universalism, or between the original Luther and the later Melanchthon, by teaching both the absolute inability of man and the universality of divine grace, without an attempt to solve these contradictory positions." (304.) "Thus the particularism of election and the universalism of vocation, the absolute inability of fallen man, and the guilt of the unbeliever for rejecting what he cannot accept, are illogically combined." (1, 330.) The real charge here raised against the Formula of Concord is, that it fails to modify the doctrines of sola gratia or universalis gratia in a manner satisfactory to the demands of human reason; for Synergists and Calvinists are agreed that, in the interest of rational harmony, one or the other must be abandoned, either universalis gratia seria et efficax, or sola gratia.
In judging of the charge in question, it should not be overlooked that, according to the Formula of Concord, all Christians, theologians included, are bound to derive their entire doctrine from the Bible alone; that matters of faith must be decided exclusively by clear passages of Holy Scripture, that human reason ought not in any point to criticize and lord it over the infallible Word of God; that reason must be subjected to the obedience of Christ, and dare not hinder faith in believing the divine testimonies even when they seemingly contradict each other. We are not commanded to harmonize, says the Formula, but to believe, confess, defend, and faithfully to adhere to the teachings of the Bible. (1078, 52ff.) In the doctrine of conversion and salvation, therefore, Lutherans confess both the sola gratia and the universalis gratia, because they are convinced that both are clearly taught in the Bible, and that to reject or modify either of them would amount to a criticism of the Word of God, and hence of God Himself. Synergists differ from Lutherans, not in maintaining universal grace (which in reality they deny as to intention as well as extension, for they corrupt the Scriptural content of grace by making it dependent on man's conduct, and thereby limit its extension to such only as comply with its conditions), but in denying the sola gratia, and teaching that the will of man enters conversion as a factor alongside of grace. And Calvinists differ from Lutherans not in maintaining the sola gratia, but in denying universal grace.
But while, in accordance with the clear Word of God, faithfully adhering to both the sola gratia and universalis gratia, and firmly maintaining that whoever is saved is saved by grace alone, and whoever is lost is lost through his own fault alone, the Formula of Concord at the same time fully acknowledges the difficulty presenting itself to human reason when we hold fast to this teaching. In particular, it admits that the question, not answered in the Bible, viz., why some are saved while others are lost, embraces a mystery which we lack the means and ability of solving, as well as the data. Accordingly, the Formula also makes no efforts whatever to harmonize them, but rather discountenances and warns against all attempts to cater to human reason in this respect, and insists that both doctrines be maintained intact and taught conjointly. Lutherans are fully satisfied that here every effort at rational harmonization cannot but lead either to Calvinistic corruption of universal grace or to synergistic modification of sola gratia.
Thus the Lutheran Church not only admits, but zealously guards, the mystery contained in the doctrine of grace and election. It distinguishes between God in as far as He is known and not known; in as far as He has revealed Himself, and in as far as He is still hidden to us, but as we shall learn to know Him hereafter. The truths which may be known concerning God are contained in the Gospel, revealed in the Bible. The things still hidden from us include the unsearchable judgments of God, His wonderful ways with men, and, in particular, the question why some are saved while others are lost. God has not seen fit to reveal these mysteries. And since reason cannot search or fathom God, man's quest for an answer is both presumptuous and vain. That is to say, we are utterly unable to uncover the divine counsels, which would show that the mysterious judgments and ways proceeding from them are in complete harmony with the universal grace proclaimed by the Gospel.
Yet Lutherans believe that the hidden God is not in real conflict with God as revealed in the Bible, and that the secret will of God does not in the least invalidate the gracious will of the Gospel. According to the Formula of Concord there are no real contradictions in God; in Him everything is yea and amen; His very being is pure reality and truth. Hence, when relying on God as revealed in Christ, that is to say, relying on grace which is pure grace only and at the same time grace for all, Christians may be assured that there is absolutely nothing in the unknown God, i.e., in as far as He has not revealed Himself to them, which might subvert their simple faith in His gracious promises. The face of God depicted in the Gospel is the true face of God. Whoever has seen Christ has seen the Father as He is in reality.
Indeed, also the hidden God, together with His secret counsels, unsearchable judgments, and ways past finding out, even the majestic God, in whom we live and move and have our being, the God who has all things well in hand, and without whom nothing can be or occur, must, in the light of the Scriptures, be viewed as an additional guarantee that, in spite of all contingencies, the merciful divine promises of the Gospel shall stand firm and immovable. Upon eternal election, says the Formula of Concord, "our salvation is so [firmly] founded 'that the gates of hell cannot prevail against it.'" (1065, 8.) As for us, therefore, it remains our joyous privilege not to investigate what God has withheld from us or to climb into the adyton of God's transcendent majesty, but merely to rely on, and securely trust in, the blessed Gospel, which proclaims grace for all and salvation by grace alone, and teaches that whoever is saved must praise God alone for it, while whoever is damned must blame only himself.
Regarding the mystery involved in predestination, the Formula of Concord explains: "A distinction must be observed with especial care between that which is expressly revealed concerning it [predestination] in God's Word and what is not revealed. For in addition to what has been revealed in Christ concerning this, of which we have hitherto spoken, God has still kept secret and concealed much concerning this mystery, and reserved it for His wisdom and knowledge alone, which we should not investigate, nor should we indulge our thoughts in this matter, nor draw conclusions nor inquire curiously, but should adhere to the revealed Word. This admonition is most urgently needed. For our curiosity has always much more pleasure in concerning itself with these matters [investigating things abstruse and hidden] than with what God has revealed to us concerning this in His Word, because we cannot harmonize it [cannot by the acumen of our natural ability harmonize the intricate and involved things occurring in this mystery], which, moreover, we have not been commanded to do."
The Formula enumerates as such inscrutable mysteries: Why God gives His Word at one place, but not at another; why He removes it from one place, and allows it to remain at another; why one is hardened, while another, who is in the same guilt, is converted again. Such and similar questions, says the Formula, we cannot answer and must not endeavor to solve. On the contrary, we are to adhere unflinchingly to both truths, viz., that those who are converted are saved, not because they are better than others, but by pure grace alone; and that those who are not converted and not saved cannot accuse God of any neglect or injustice but are lost by their own fault. The Formula concludes its paragraphs on the mysteries in predestination by saying: "When we proceed thus far in this article [maintaining that God alone is the cause of man's salvation and man alone is the cause of his damnation, and refusing to solve the problems involved], we remain on the right [safe and royal] way, as it is written Hos. 13, 9: 'O Israel, thou hast destroyed thyself; but in Me is thy help.' However, as regards these things in this disputation which would soar too high and beyond these limits, we should, with Paul, place the finger upon our lips, remember and say, Rom. 9, 20: 'O man, who art thou that repliest against God?'" (1078, 52ff.)
232. Predestination a Comforting Article.
Christian doctrines, or doctrines of the Church, are such only as are in exact harmony with the Scriptures. They alone, too, are able to serve the purpose for which the Scriptures are given, viz., to convert and save sinners, and to comfort troubled Christians. Scriptural doctrines are always profitable, and detrimental doctrines are never Scriptural. This is true also of the article of eternal election. It is a truly edifying doctrine as also the Formula of Concord is solicitous to explain. (1092, 89ff.) However, it is comforting only when taught in its purity, i.e., when presented and preserved in strict adherence to the Bible; that is to say, when both the sola gratia and gratia universalis are kept inviolate. Whenever the doctrine of predestination causes despair or carnal security, it has been either misrepresented or misunderstood.