A confessional is a box, cabinet, or stall in which the priest in Christian churches sits to hear the confessions of penitents. It is the usual venue for the sacrament in the Roman Catholic Church, but similar structures are also used in Anglican churches of an Anglo-Catholic orientation, and also in the Lutheran Church. In the Catholic Church, confessions are only to be heard in a confessional or oratory, except for a just reason.
The confessional is usually a wooden structure, with a centre compartment—entered through a door or curtain—in which the priest sits, and on each side there is a latticed opening for the penitents to speak through and a step on which they kneel. By this arrangement the priest is hidden, but the penitent is visible to the public. Confessionals sometimes form part of the architectural scheme of the church; many finely decorated specimens, dating from the late 16th and the 17th centuries, are found in churches on the continent of Europe. A notable example, in Renaissance style, is in the Saint Michael's church at Leuven. But more usually, confessionals are movable pieces of furniture.
The confessional in its modern form dates no farther back than the 16th century, and Du Cange cites the year 1563 for an early use of the word confessionale for the sacrum poenitentiae tribunal. Originally the term was applied to the place where a martyr or "confessor" (in the sense of one who confesses Christ) had been buried. There are, however, instances (e.g. the confessional of Church of St. Trophime at Arles) where the name was attached to the spot, whether cell or seat, where noted saints were wont to hear confessions. In the popular Protestant view confessional boxes are associated with the scandals, real or supposed, of the practice of auricular confession. They were, however, devised to guard against such scandals by securing at once essential publicity and a reasonable privacy, and by separating priest and penitent. In the Middle Ages stringent rules were laid down, in this latter respect, by the canon law in the case of confessions by women and especially nuns. In England, before the Protestant Reformation, publicity was reckoned the best safeguard. Thus Archbishop Walter Reynolds, in 1322, says in his Constitutions: "Let the priest choose for himself a common place for hearing confessions, where he may be seen generally by all in the church; and do not let him hear any one, and especially any woman, in a private place, except in great necessity."