Solemnity of Corpus Christi
“Because Christ our Redeemer said that it was truly his body that he was offering under the species of bread, it has always been the conviction of the Church of God, and this holy Council now declares again, that by the consecration of the bread and the wine there takes place a change of the whole substance of the bread into the substance of the body of Christ our Lord and of the whole substance of the wine into the substance of his blood. This change the holy Catholic Church has fittingly and properly called transubstantiation.”
These words of the Council of Trent (DS 1642), which are taken up again in the Catechism of the Catholic Church (CCC 1376), make clear the dogma of transubstantiation.
By this mystery, the substance of bread is converted into the substance of Christ’s Body. Further, the substance of wine is converted to the substance of Christ’s Blood. And, because (now, in heaven) Christ’s body and blood are united one with the other and both are further united to his soul and his divinity, the body and blood, soul and divinity of Christ are present in each Eucharistic species and in all of their parts.
The dogma of transubstantiation rules out two other theories: Annihilation and consubstantiation. From this teaching, we may draw a helpful analogy for family life.