Roman Catechism 38.39

Chapter 38 — Part IV: Prayer — The Fourth Petition: Give Us This Day Our Daily Bread

Section 39. Christ Is Our Spiritual Bread, Especially In The Holy Eucharist — Now Christ the Lord is that bread which is the food of the soul. I am, He says of Himself, the living bread which came down from heaven. It is incredible with what pleasure and delight this bread fills devout souls, even when they must contend with earthly troubles and disasters. Of this we have an example in the Apostles, of whom it is written: They, indeed, went into the presence of the council rejoicing. The lives of the Saints are full of similar examples; and of these inward joys of the good, God thus speaks: To him that overcometh, I will give the hidden manna.