From The Princeton Theological Review, vii. 1909, pp. 219–325.
The first chapters of Calvin’s “Institutes” are taken up with a comprehensive exposition of the sources and guarantee of the knowledge of God and divine things (Book I. chs. i.–ix.). A systematic treatise on the knowledge of God must needs begin with such an exposition; and we require no account of the circumstance that Calvin’s treatise begins with it, beyond the systematic character of his mind and the clearness and comprehensiveness of his view. This exposition therefore makes its appearance in the earliest edition of the “Institutes,” which attempted “to give a summary of religion in all its parts,” redacted in orderly sequence; that is to say, which was intended as a textbook in theology. This was the second edition, published in 1539, which was considered by Calvin to be the first which at all corresponded to its title. In this edition this exposition already stands practically complete. Large insertions were made into it subsequently, by which it was greatly enriched as a detailed exposition and validation of the sources of our knowledge of God; but no modifications were made in its fundamental teaching by these additions, and the ground plan of the exposition as laid down in 1539 was retained unaltered throughout the subsequent development of the treatise.
We may observe in the controversies in which Calvin had been engaged between 1536 and 1539 a certain preparation for writing this comprehensive and admirably balanced statement, with its equal repudiation of Romish and Anabaptist error and its high note of assurance in the face of the scepticism of the average man of the world. We may trace in it the fruits of his eager and exhaustive studies prosecuted in the interval, as pastor, professor, and Protestant statesman; and especially of his own ripening thought as he worked more and more into detail his systematic view of the body of truth. But we can attribute to nothing but his theological genius the feat by which he set a compressed apologetical treatise in the forefront of his little book—for the “Institutes” were still in 1539 a little book, although already expanded to more than double the size of their original form (edition of 1536). Thus he not only for the first time supplied the constructive basis for the Reformation movement, but even for the first time in the history of Christian theology drew in outline the plan of a complete structure of Christian Apologetics. For this is the significance in the history of thought of Calvin’s exposition of the sources and guarantee of the knowledge of God, which forms the opening topic of his “Institutes.” “Thus,” says Julius Köstlin, after cursorily surveying the course of the exposition, “there already rises with him an edifice of Christian Apologetics, in its outlines complete (fertig). With it, he stands, already in 1539, unique (einzig) among the Reformers, and among Christian theologians in general up to his day. Only as isolated building-stones can appear in comparison with this, even what Melanchthon, for example, offered in the last elaboration of the Loci with reference to the proofs for the existence of God.”1 In point of fact, in Augustine alone among his predecessors do we find anything like the same grasp of the elements of the problem as Calvin here exhibits; and nowhere among his predecessors do we find these elements brought together in a constructive statement of anything like the completeness and systematic balance which he gave to it.
At once on its publication, however, Calvin’s apologetical construction became the property of universal Christian thought, and it has entered so vitally into Protestant, and especially Reformed, thinking as to appear now-a-days very much a matter of course. It is difficult for us to appreciate its novelty in him or to realize that it is not as native to every Christian mind as it now seems to us the inevitable adjustment of the elements of the problems raised by the Christian revelation. Familiar as it seems, therefore, it is important that we should apprehend it, at least in its outlines, as it lies in its primary statement in Calvin’s pages. So only can we appreciate Calvin’s genius or estimate what we owe to him. A very brief abstract will probably suffice, however, to bring before us in the first instance the elements of Calvin’s thought. These include the postulation of an innate knowledge of God in man, quickened and developed by a very rich manifestation of God in nature and providence, which, however, fails of its proper effect because of man’s corruption in sin; so that an objective revelation of God, embodied in the Scriptures, was rendered necessary, and, as well, a subjective operation of the Spirit of God on the heart enabling sinful man to receive this revelation—by which conjoint divine action, objective and subjective, a true knowledge of God is communicated to the human soul.