Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 176. Nor did (the Council) omit carefully to explain that to God alone is offered this Sacrifice. For although the Church sometimes offers Masses in honour and in memory of the Saints, yet she teaches that the Sacrifice is offered, not to them, but to God alone, who has crowned the Saints with immortal glory. Hence the priest never says: I offer Sacrifice to thee Peter, or to thee Paul; but, while he offers Sacrifice to God alone, he renders Him thanks for the signal victory won by the blessed martyrs, and thus implores their patronage, that they, whose memory we celebrate on earth, may vouchsafe to intercede for us in heaven."