Chapter 38 — Part IV: Prayer — The Fourth Petition: Give Us This Day Our Daily Bread
Section 42. Why The Holy Eucharist Is Called Our "Daily" Bread — The Eucharist is called daily (bread) for two reasons. The first is that it is daily offered to God in the sacred mysteries of the Christian Church and is given to those who seek it piously and holily. The second is that it should be received daily, or, at least, that we should so live as to be worthy, as far as possible, to receive it daily. Let those who hold the contrary, and who say that we should not partake of this salutary banquet of the soul but at distant intervals, hear what St. Ambrose says: If it is daily bread, why do you receive it yearly?