As great as is the dissimilarity between Luther's two Catechisms, on the one hand, so great, on the other, is the similarity. If one did not know that the Large Catechism was begun before the Small, and that both originated in the sermons of 1528, he might either view the Large Catechism as a subsequent expansion of the Small, or the latter as a summary of the former. Yet neither the one nor the other is the case. If the Large Catechism influenced the Small, so also the latter the former. Albrecht says: "It is more probable that the Small Catechism influenced the Large Catechism than vice versa." (W. 30, 1, 558.) At all events, the second table-series could not have been extracted from the Large Catechism as such, since the latter was only completed after March 25, whereas these tables were published already on March 16. The Small Catechism has been characterized as "a small basketful of ripe fruit gathered from that tree" [the Large Catechism]. In substance that is true, since both originate from the same source, the sermons of 1528. Already Roerer calls attention to this similarity, when in the aforementioned letter, he designates the Large Catechism as "Catechismus per D. M. praedicatus," and then describes the Small Catechism as "tabulae complectentes brevisissime simul et crasse catechismum Lutheri pro pueris et familia." Both treat of the same five chief parts; the explanation of both presupposes the knowledge of the text of these parts, both owe their origin to the doctrinal ignorance, uncovered particularly in the Saxon visitation; and the purpose of both is the instruction of the plain people and the young. Indeed, it was not for scholars, but for the people that Luther lived, labored, and contended. "For," says he in his German Mass, "the paramount thing is to teach and lead the people." (W. 19, 97.)
Above all, Luther endeavored to acquaint the "dear youth" with the saving truths, not merely for their own sakes, but in the interest of future generations as well. He desired to make them mature Christians, able to confess their faith and to impart instruction to their children later on. In particular, the two Catechisms were to serve the purpose of properly preparing the children and the unlearned for the Holy Eucharist, as appears from the Preface to the Small Catechism and from the last paragraphs of the Large (536, 21ff.; 760, 39ff.); for both end in admonitions diligently to partake of the Lord's Supper. The Sacrament of the Altar, in Luther's estimation, is the goal of all catechetical instruction. For this reason he added to the ancient chief parts those of Baptism, Confession, and the Lord's Supper.
Accordingly, both Catechisms, though in various respects, are intended for all: people, youth, parents, preachers, and teachers. It is not correct to say that Luther wrote his Large Catechism only for scholars, and the other only for the unlearned. He desired to instruct all, and, at the same time, enable parents and pastors to teach. According to Luther, it is the duty of every Christian to learn constantly, in order also to be able to teach others in turn. If any one, said he, really no longer needed the Catechism for himself, he should study it nevertheless for the sake of the ignorant. Nor did Luther exempt himself from such study. In the Long Preface to the Large Catechism we read: "But for myself I say this: I am also a doctor and preacher, yea, as learned and experienced as all those may be who have such presumption and security; yet I do as a child who is being taught the Catechism, and every morning, and whenever I have time, I read and say, word for word the Ten Commandments, the Creed, the Lord's Prayer, the Psalms, etc. And I must still read and study daily, and yet I cannot master it as I wish, but must remain a child and pupil of the Catechism, and am glad so to remain." (569, 7.)
April 18, 1530, Luther repeated this in a sermon as follows: "Whoever is able to read, let him, in the morning, take a psalm or some other chapter in the Bible and study it for a while. For that is what I do. When I rise in the morning, I pray the Ten Commandments, the Creed, the Lord's Prayer, and also a psalm with the children. I do so because I wish to remain familiar with it, and not have it overgrown with mildew, so that I know it." (W. 32, 65.) In a sermon of November 27, of the same year, Luther warns: "Beware lest you become presumptuous, as though, because you have heard it often, you knew enough of the Catechism. For this knowledge ever desires us to be its students. We shall never finish learning it, since it does not consist in speech, but in life. … For I also, D. M., doctor and preacher, am compelled day by day to pray and to recite the words of the Decalog, the Symbol, and the Lord's Prayer as children are wont to do. Hence you need not be ashamed; for much fruit will result." (209.)
103. Particular Purpose of Large Catechism.
In his sermons of 1529 Luther declared repeatedly that his purpose was to instruct the plain people and the children in those things which he regarded as the minimum every Christian ought to know. (30, 1, 2. 27. 57.) And he did not abandon this purpose when he condensed his sermons into the Large Catechism. Accordingly, he begins it with the words: "This sermon is designed and undertaken that it might be an instruction for children and the simple-minded." (575, 1.) Again: "For the reason, why we exercise such diligence in preaching the Catechism so often is that it may be inculcated on our youth, not in a high and subtile manner, but briefly and with the greatest simplicity, so as to enter the mind readily and be fixed in the memory." (581, 27.) Hence Roerer also characterized the Large Catechism as "Catechismus per D. M. praedicatus pro rudibus et simplicibus." Many expressions of the Large Catechism also point to the fact that everything was here intended for the young and the common people. For example: "All this I say that it may be well impressed upon the young." (621, 140.) "But now for young scholars let it suffice to indicate the most necessary points." (681, 12.) "But to explain all these single points separately belongs not to brief sermons for children, but rather to the ampler sermons that extend throughout the entire year." (687, 32.) Thus Luther aimed to serve the people and the children also by his Large Catechism. Not, indeed, that it was to be given into the hands of the children (the Small Catechism served that purpose), but that preachers, teachers, and parents were to use it with a view to teaching them by example how to expound the articles of the Christian doctrine for the simple-minded.
In particular, the Large Catechism was to enable the less educated pastors in the villages and in the country to do justice to their sacred duty. The instructions of the visitors called for regular Catechism-sermons. For this purpose Luther sought to furnish the preachers with material. From the Large Catechism they were to learn how to deliver simple, plain sermons on the five chief parts. In the longer Preface Luther therefore directs his admonition "to all Christians, but especially to all pastors and preachers, that they should daily exercise themselves in the Catechism, which is a short summary and epitome of the entire Holy Scriptures, and that they may always teach the same." And why? Luther explains: "We have no slight reasons for treating the Catechism so constantly, and for both desiring and beseeching others to teach it, since we see to our sorrow that many pastors and preachers are very negligent in this, and slight both their office and this teaching; some from great and high art, but others from sheer laziness and care for their paunches," etc. (567.)
Ministers, according to Luther, were to study the Catechism for their own instruction and edification as well as in the interest of their office. Hence he concludes his Preface, saying: "Therefore I again implore all Christians, especially pastors and preachers, not to be doctors too soon, and imagine that they know everything (for imagination and cloth unshrunk fall far short of the measure), but that they daily exercise themselves well in these studies and constantly treat them; moreover, that they guard with all care and diligence against the poisonous infection of such security and vain imagination, but steadily keep on reading, teaching, learning, pondering, and meditating, and do not cease until they have made a test and are sure that they have taught the devil to death, and have become more learned than God Himself and all His saints." (573, 19; 535, 17.)
From the Large Catechism, therefore, pastors were to learn how to preach the fundamental Christian truths. "To be sure," says Albrecht, "Luther did not make it as easy for the pastors as was later done by Osiander and Sleupner in the Nuernberg Children's Sermons, where the individual sermons are exactly marked off, the form of address to the children is retained, and, in each instance, a short explanation, to be memorized, is added to the longer explanation." (W. 30, 1, 478.)—That it was Luther's purpose to have his Large Catechism serve also parents appears from the instructions at the beginning and the end of it. (574, 17; 772, 87.)
104. Special Purpose of Small Catechism.