Solemnity of Corpus Cristi
"While they were eating, he took bread, said the blessing, broke it, gave it to them, and said, 'Take it; this is my body.' Then he took a cup, gave thanks, and gave it to them, and they all drank from it. He said to them, 'This is my blood of the covenant, which will be shed for many.'" The Solemnity of the Body and Blood of Christ is observed on the Thursday following on the Solemnity of the Most Blessed Trinity. Where the Solemnity of the Body and Blood of Christ is not observed as a Holy Day of obligation on Thursday, it is assigned to the Sunday after Trinity Sunday, which is then considered its proper day in the calendar. The Mass includes an option of singing or reciting the Sequence Laud, O Zion or Lauda Sion before the Alleluia. This sequence is optional. There are only two other feasts (Easter and Pentecost) with Sequences. This feast is both a doctrinal and cultic response to heretical teaching on the mystery of the real presence of Christ in t...