From time immemorial the bread used in the Holy Communion has generally been unleavened, or wafer bread as it is sometimes called, from its shape, being made round like a wafer. Unleavened bread is used from a sense of reverence, using something specially made for so holy a purpose, and also because unleavened bread is not so likely to crumble as ordinary bread. It is also believed that this was undoubtedly the kind of bread our Lord used when He instituted the Blessed Sacrament.