Sacramental bread, also called Communion bread, Eucharistic bread, the Lamb or simply the host (), is the bread used in the Christian ritual of the Eucharist. Along with sacramental wine, it is one of two elements of the Eucharist. The bread may be either leavened or unleavened, depending on tradition. Catholic theology generally teaches that at the Words of Institution the bread's substance is changed into the Body of Christ (transubstantiation), whereas Eastern Christian theology generally views the epiclesis as the point at which the change occurs. Bread was also used in Jewish Temple ritual as well as in the religious rituals of Mandaeism, Mithraism, and other pagan cultures similar to that of ancient Egypt. Christianity Etymology of host The word host is derived from the Latin , which means 'sacrificial victim'. The term can be used to describe the bread both before and after consecration, although it is more correct to use it after consecration. Eastern traditions With the exception of Churches of the Armenian Rite, the Maronite Church, and the Syro-Malabar Church, Eastern Orthodox Church and Eastern Catholic Churches use leavened bread for the Eucharist. Thus, the sacramental bread symbolizes the Resurrected Christ. The host, known as or a (, 'offering') may be made out of only four ingredients: fine (white) wheat flour, pure water, yeast, and salt. Sometimes holy water will be either sprinkled into the dough or on the kneading trough at the beginning of the process. Armenian rite Because leaven is symbolic of sin, the Armenian Catholic Church and the Armenian Apostolic Orthodox Church traditionally offer unleavened bread (although it is distinctively different from the kind used by the Catholic Church) to symbolize the sinlessness of Christ. Eastern Orthodox Churches The baking may only be performed by a believing Orthodox Christian in good standing—having preferably been recently to Confession, and is accompanied by prayer and fasting. Before baking, each loaf is formed by placing two disks of dough, one on top of the other, and stamping it with a special liturgical seal. The prosphora should be fresh and not stale or moldy when presented at the altar for use in the Divine Liturgy. Often several prosphora will be baked and offered by the faithful, and the priest chooses the best one for the Lamb (Host) that will be consecrated. The remaining loaves are blessed and offered back to the congregation after the end of the