[18] The receptacle in which the consecrated host is shown to the people.
[19] The corporal-cloth spread over the altar during the communion service.
[20] See p. 306.
[21] See pp. 308 f., 311 ff.
[22] It is the teaching of the Roman Church that a sacrament is effective ex opere operato, i. e., simply as a sacrament ordained of God. Intended to guard against the idea that the validity of the sacrament depended on the character of the priest or of the recipient, it gave rise to the notion that the sacrament worked a sort of sacred magic.
[23] See p. 316.
[24] See p. 313.
[25] Cf. XCV Theses, pp. 19, 41.
[26] Lasst uns des gewissen spielen.
[27] See p. 316.