The Solemnity of Corpus Christi celebrates
the Most Holy Body and Blood of Jesus Christ.

This feast honors Jesus Christ,
Really, Truly and Substantially Present
under the appearance of bread and wine.

This Presence happens through the change
 which the Catholic Church calls
transubstantiation (“change of substance”),
when at the Consecration of a Catholic Mass,
the priest says the words which Christ Himself pronounced
over bread and wine:

“This is My Body,”

“This is the chalice of My Blood,”

“Do this in remembrance of Me.”