Nevertheless, there should be freedom here: for instance, if we are unable, because of an emergency or another significant reason, to preach at six or seven, at twelve or one o’clock, on Sunday or Monday, in the choir or at St. Peter’s, one may preach at a different hour, day, or place, just as long as one does not confuse the people, but properly apprises them of such a change. These matters are purely external (as far as time, place, and persons are concerned) and may be regulated entirely by reason, to which they are altogether subject. God, Christ, and the Holy Spirit are not interested in them—just as little as they are interested in what we wish to eat, drink, wear, and whom we marry, or where we want to dwell, walk, or stand; except that (as was said) no one should, without reason, adopt his own way and confuse or hinder the people. Just as at a wedding or other social event no one should offend the bride or the company by doing something special or something that interferes, but one should join the rest, and sit, walk, stand, dance, eat, and drink with them. For it is impossible to order a special table for each individual, and also a special kitchen, cellar, and servant. If he wants anything, let him leave the table without disturbing the others. Thus here too everything must be conducted peacefully and in order, and yet there must be freedom if time, person, or other reasons demand a change; then the masses will also follow harmoniously, since (as was said) no Christian is thereby made any more or less holy. (Luther’s Works, v.41, p.174)
Picture: St. John