Holy Eucharist Teachings by the Fathers of the Church
Our Savior, therefore, when about to depart from this world to the Father, instituted this sacrament in which He poured forth, as it were, the riches of His divine love for men, "making a remembrance of his wonderful works" (Ps 110:4), and He commanded us in the consuming of it to cherish His "memory" (1 Cor 11:24), and "to show forth his death until He come" to judge the world (1 Cor 11:26). But He wished that this sacrament be received as the spiritual food of souls (Mt 26:26), by which they may be nourished and strengthened, living by the life of Him who said: "He who eateth me, the same also shall live by me" (Jn 6:58), and as an antidote, whereby we may be freed from daily faults and be preserved from mortal sins. He wished, furthermore, that this be a pledge of our future glory and of everlasting happiness..."
Holy Eucharist teachings by the Fathers of the Church - The Council of Trent, Section XIII, Decree on the Most Holy Eucharist