The room where the priest(s), the prayer leader(s) and the altarThe altar is the central piece of furniture used in the Eucharist. Originally, an altar used to be a sacrificial table. This fits in with the theological view that Jesus sacrificed himself, through his death on the cross, to redeem mankind, as symbolically depicted in the painting "The Adoration of the Lamb" by the Van Eyck brothers. In modern times the altar is often described as "the table of the Lord". Here the altar refers to the table at which Jesus and his disciples were seated at the institution of the Eucharist during the Last Supper. Just as Jesus and his disciples did then, the priest and the faithful gather around this table with bread and wine. server(s) and/or acolyte(s) prepare and change clothes for MassThe liturgical celebration in which the Eucharist is central. It consists of two main parts: the Liturgy of the Word and the Liturgy of the Eucharist. The main parts of the Liturgy of the Word are the prayers for mercy, the Bible readings, and the homily. The Liturgy of the Eucharist begins with the offertory, whereby bread and wine are placed on the altar. This is followed by the Eucharistic Prayer, during which the praise of God is sung, and the consecration takes place. Fixed elements are also the praying of the Our Father and a wish for peace, and so one can symbolically sit down at the table with Jesus during Communion. Mass ends with a mission (the Latin missa, from which 'Mass' has been derived): the instruction to go out into the world in the same spirit..