forgive as is expressed in that rite, and that membership in the Church is a condition of absolution. His whole theory as to the legal nature of man's (the Christian's) relationship to God, and the practice, inaugurated by Tertullian, of designating this connection by terms derived from Roman law continued to prevail in the West down to Augustine's time.[275] But, during this whole interval, no book was written by a Western Churchman which made the salvation of the sinful Christian dependent on ascetic offerings of atonement, with so little regard to Christ's grace and the divine factor in the case, as Cyprian's work _de opere et eleemosynis_. No less significant is Cyprian's advance as regards the idea of the sacrifice in public worship, and that in three respects. To begin with, Cyprian was the first to associate the specific offering, i.e., the Lord's Supper[276] with the specific priesthood. Secondly, he was the first to designate the _passio dominis_, nay, the _sanguis Christi_ and the _dominica hostia_ as the object of the eucharistic offering.[277] Thirdly, he expressly represented the celebration of the Lord's Supper as an incorporation of the congregation and its individual members with Christ, and was the first to bear clear testimony as to the special importance attributed to commemoration of the celebrators ("vivi et defuncti"), though no other can be ascertained than a specially strong intercession.[278] But this is really the essential effect of the sacrifice of the supper as regards the celebrators; for however much the conceptions about this ceremony might be heightened, and whatever additions might be made to its ritual, forgiveness of sins in the strict sense could not be associated with it. Cyprian's statement that every celebration of the Lord's Supper is a repetition or imitation of Christ's sacrifice of himself, and that the ceremony has therefore an expiatory value remains a mere assertion, though the Romish Church still continues to repeat this doctrine to the present day. For the idea that partaking of the Lord's Supper cleansed from sin like the mysteries of the Great Mother (magna mater) and Mithras, though naturally suggested by the ceremonial practice, was counteracted by the Church principles of penance and by the doctrine of baptism. As a sacrificial rite the Supper never became a ceremony equivalent in effect to baptism. But no doubt, as far as the popular conception was concerned, the solemn ritual copied from the ancient mysteries could not but attain an indescribably important significance. It is not possible, within the framework of the history of dogma, to describe the development of religious ceremonial in the third century, and to show what a radical alteration took place in men's conceptions with regard to it (cf. for example, Justin with Cyprian). But, in dealing with the history of dogma within this period, we must clearly keep in view the development of the cultus, the new