Sacramental bread adopted the use of unleavened bread due to Liturgical Latinisation. A Host is a portion of bread used for Holy Communion in many Christian churches. In Western Christianity the host is often a thin, round unleavened wafer. In the Roman Rite, unleavened bread is used as in the Jewish Passover or Feast of Unleavened Bread. The Code of Canon Law, Canon 924 requires that the hosts be made from wheat flour and water only and recently made so that there is no danger of spoiling. Hosts are often made by nuns as a means of supporting their religious communities. However,
Passover contains an instruction to eat matzo, specifically, on the first night of Passover and to eat only unleavened bread (in practice, matzo) during the entire week of Passover. Consequently, the eating of matzo figures prominently in the Passover Seder. There are several explanations for this. The Torah says that it is because the Hebrews left Egypt with such haste that there was no time to allow baked bread to rise; thus flat, unleavened bread, matzo, is a reminder of the rapid departure of the Exodus. Other scholars teach that in the time of the Exodus, matzo was commonly baked for