Changes? The Mass is not changing but we are going to use a new edition of the Roman Missal, the prayer book at Mass, in a new English translation. In changed words, we gather as the body of Christ in celebrating the Eucharist, fulfilling the Lord s command to do this in memory of me . The New Missal has been put together by the National Centre for Liturgy to provide a user friendly explanation of why we have a new edition of the Missal and an account of what is new in this Missal as it replaces the edition we have used since 1975. It explains the changes to texts that we will experience in a new translation of its prayers.