GIRM What is taught in this way by the Council is consistently expressed in the formulas of the Mass. Moreover, the doctrine which stands out in the following sentence, already notable and concisely expressed in the ancient Sacramentary commonly called the Leonine—"for whenever the memorial of this sacrifice is celebrated the work of our redemption is accomplished"[3]—is aptly and exactly expounded in the Eucharistic Prayers; for as in these the Priest enacts the anamnesis, while turned towards God likewise in the name of all the people, he renders thanks and offers the living and holy sacrifice... https://www.usccb.org/prayer-and-worship/the-mass/general-instruction-of-the-roman-missal/girm-introduction 299. The altar should be built separate from the wall, in such a way that it is possible to walk around it easily and that Mass can be celebrated at it facing the people, which is desirable wherever possible . Moreover, the altar should occupy a place where it is truly t...