docere debeant._" Evidently this, too, was done with Luther's approval (_auctoris consilio et iussu_). "Thus Luther at that time already," says Albrecht, "selected this place for Confession and retained it later on, when [1531] he furnished another form of confession for the Catechism which to him seemed more appropriate." The gradual insertion of a new chief part (of Confession and Absolution) between Baptism and the Lord's Supper was therefore entirely according to Luther's mind; indeed, it had virtually been carried out by him as early as 1529. The original part Of Confession, however, was no catechetical and doctrinal part in the proper sense of the word, but purely a liturgical formula of Confession, even the Absolution being omitted. It merely contained two confessions similar to the forms found in the Book of Concord, page 552, sections 21 to 23. Hence Luther, in the edition of 1531, replaced it with a catechetico-liturgical form entitled, "How the Unlearned Should be Taught to Confess." It is identical with the one found in the Book of Concord of 1580, save only that the original contained the words, "What is Confession? Answer," which are omitted in the German Concordia. Luther placed the part Of Confession between Baptism and the Lord's Supper, thereby actually making this the fifth and the Lord's Supper the sixth chief part. And when later on (for in Luther's editions the chief parts are not numbered) the figures were added, Confession could but receive the number 5, and the Lord's Supper, 6. Thus, then, the sequence of the six parts, as found in the Book of Concord, was, in a way, chosen by Luther himself. 113. Office of the Keys and Christian Questions.