Desiderio desideravi, the title of Pope Francis's 2022 document on the sacred liturgy, comes from the Latin version of Luke 22:15: "I have earnestly desired (Desiderio desideravi) to eat this Passover with you before I suffer." Pope Francis begins this beautiful and relatively short reflection on the beauty, goodness, and truth of the sacred liturgy by reminding us of the Most Holy Trinity's love for us and desire for us. Responding to the need demonstrated by the desire of some Catholics for the pre-Vatican II Mass, Pope Francis encourages a deepening of our understanding of the Eucharist in order that we might fully appreciate the riches of the liturgy. The pope's test is accompanied by a helpful introduction and commentary by prominent liturgical and sacramental theologian, Kevin W. Irwin.