This Mass is, first of all, the memorial of the institution of the eucharist, that is, of the Memorial of the Lord's Passover, by which under sacramental signs he perpetuated among us the sacrifice of the New Law. The Mass of the Lord's Supper is also the memorial of the institution of the priesthood, by which Christ's mission and sacrifice are perpetuated in the world. In addition, this Mass is the memorial of that love by which the Lord loved us even to death.