The conviction that during the This is the ritual that is the kernel of Mass, recalling what Jesus did the day before he died on the cross. On the evening of that day, Jesus celebrated the Jewish Passover with his disciples. After the meal, he took bread, broke it and gave it to his disciples, saying, "Take and eat. This is my body." Then he took the cup of wine, gave it to his disciples and said, "Drink from this. This is my blood." Then Jesus said, "Do this in remembrance of me." During the Eucharist, the priest repeats these words while breaking bread [in the form of a host] and holding up the chalice with wine. Through the connection between the broken bread and the "broken" Jesus on the cross, Jesus becomes tangibly present. At the same time, this event reminds us of the mission of every Christian: to be "broken bread" from which others can live. bread and wine really do change into the body and blood of Jesus Christ, without changing their outer characteristics (bread and wine). As a result, the In the Roman Catholic Church, the moment when, during the Eucharist, the bread and wine are transformed into the body and blood of Jesus, the so-called transubstantiation, by the pronouncement of the sacramental words. A portion of bread made of unleavened wheat flour that, according to Roman Catholic belief, becomes the body of Christ during the Eucharist. can be venerated as the The consecrated host, in which the presence of Jesus Christ is acknowledged. A synonym is 'the Venerable'. In larger churches a chapel is dedicated to it, usually on the south side of the church.. The doctrine of transubstantiation has caused much controversy in church history and led to various separation movements (such as Protestantism).