Nor does he proceed until he has applied his oft repeated words concerning the relation of faith to good works to the relation of the First to the other Commandments. From the fact, that according to the First Commandment, we acquire a pure heart and confidence toward God, he derives the good work of the Second Commandment, namely, "to praise God, to acknowledge His grace, to render all honor to Him alone." From the same source he derives the good work of the Third Commandment, namely, "to observe divine services with prayer and the hearing of preaching, to incline the imagination of our hearts toward God's benefits, and, to that end, to mortify and overcome the flesh." From the same source he derives the works of the Second Table.
The argument on the Third and Fourth Commandments claims nearly one-half of the entire treatise. Among the good works which, according to the Third Commandment, should be an exercise and proof of faith, Luther especially mentions the proper hearing of mass and of preaching, common prayer, bodily discipline and the mortification of the flesh, and he joins the former and the latter by an important fundamental discussion of the New Testament conception of Sabbath rest.
Luther discusses the Fourth Commandment as fully as the Third.
The exercise of faith, according to this Commandment, consists in the faithful performance of the duties of children toward their parents, of parents toward their children, and of subordinates toward their superiors in the ecclesiastical as well as in the common civil sphere. The various duties issue from the various callings, for faithful performance of the duties of one's calling, with the help of God and for God's sake, is the true "good work."As he now proceeds to speak of the spiritual powers, the government of the Church, he frankly reveals their faults and demands a reform of the present rulers. Honor and obedience in all things should be rendered unto the Church, the spiritual mother, as it is due to natural parents, unless it be contrary to the first Three Commandments. But as matters stand now the spiritual magistrates neglect their peculiar work, namely, the fostering of godliness and discipline, like a mother who runs away from her children and follows a lover, and instead they undertake strange and evil works, like parents whose commands are contrary to God. In this case members of the Church must do as godly children do whose parents have become mad and insane.
Kings, princes, the nobility, municipalities and communities must begin of their own accord and put a check to these conditions, so that the bishops and the clergy, who are now too timid, may be induced to follow. But even the civil magistrates must also suffer reforms to be enacted in their particular spheres;especially are they called on to do away with the rude "gluttony and drunkenness," luxury in clothing, the usurious sale of rents and the common brothels. This, by divine and human right, is a part of their enjoined works according to the Fourth Commandment.
Luther, at last, briefly treats of the Second Table of the Commandments, but in speaking of the works of these Commandments he never forgets to point out their relation to faith, thus holding fast this fundamental thought of the book to the end.
Faith which does not doubt that God is gracious, he says, will find it an easy matter to be graciously and favorably minded toward one's neighbor and to overcome all angry and wrathful desires. In this faith in God the Spirit will teach us to avoid unchaste thoughts and thus to keep the Sixth Commandment. When the heart trusts in the divine favor, it cannot seek after the temporal goods of others, nor cleave to money, but according to the Seventh Commandment, will use it with cheerful liberality for the benefit of the neighbor. Where such confidence is present there is also a courageous, strong and intrepid heart, which will at all times defend the truth, as the Eighth Commandment demands, whether neck or coat be at stake, whether it be against pope or kings. Where such faith is present there is also strife against the evil lust, as forbidden in the Ninth and Tenth Commandments, and that even unto death.
3. The Importance of the Work. -- Inquiring now into the importance of the book, we note that Luther's impression evidently was perfectly correct, when he wrote to Spalatin, long before its completion -- as early as March 2 5. -- that he believed it to be better than anything he had heretofore written.
