Besides these external signs and holy possessions the church has other externals that do not sanctify it either in body or soul, nor were they instituted or commanded by God; but, as we said at length above, they are outwardly necessary or useful, proper and good—for instance, certain holidays and certain hours, forenoon or afternoon, set aside for preaching or praying, or the use of a church building or house, altar, pulpit, baptismal font, candlesticks, candles, bells, priestly vestments, and the like. These things have no more than their natural effects, just as food and drink accomplish no more by virtue of the grace the children say at the table, for the ungodly or rude folk who don’t say it, that is, who neither pray to God nor thank him, grow just as fat and strong from food and drink as Christians do. To be sure, Christians could be and remain sanctified even without these items, even if they were to preach on the street, outside a building, without a pulpit, if absolution were pronounced and the sacrament administered without an altar, and if baptism were performed without a font—as happens daily that for special reasons sermons are preached and baptisms and sacraments administered in the home. But for the sake of children and simple folk, it is a fine thing and conducive to good order to have a definite time, place, and hour to which people can adapt themselves and where they may assemble, as St. Paul says in I Corinthians 14 [:40], “All things should be done decently and in order.” And no one should (as no Christian does) ignore such order without cause, out of mere pride or just to create disorder, but one should join in observing such order for the sake of the multitude, or at least should not disrupt or hinder it, for that would be acting contrary to love and friendliness. (Luther’s Works, v.41, p.173-174)
Picture: St. Luke: “Fitit in Diebus Herodis Regis,” the Latin of Lk 1:5, “In the days of Herod king…”