The Lectionary for Mass does not indicate that any readings may be omitted at the Celebration of the Lord’s Passion. All three readings (Isaiah, Hebrews, and the Passion according to John) are required. It should be noted, however, for Palm Sunday of the Lord’s Passion, the Lectionary indicates that while all three readings provided should be used, there may be circumstances in which one or more of the readings at Mass could be omitted: "Given, however, the importance of the account of the Lord’s Passion, the priest, having in mind the character of each individual congregation, is authorized to choose only one of the two readings prescribed before the Gospel, or if necessary, he may read only the account of the Passion, even in the shorter form. This permission applies, however, only to Masses celebrated with a congregation." Thus, the account of the Passion is never omitted.