The Eucharist is based on the events of , , , and .
Real presence of Christ in the Eucharist: sacramental union in Mikael Agricola Church, Helsinki. Lutherans believe that the Body and Blood of Christ are "truly and substantially present in, with and under the forms" of
consecrated bread and wine (the elements), so that communicants eat and drink both the elements and the true Body and Blood of
Christ himself in the Sacrament of the Eucharist whether they are believers or unbelievers. The Lutheran doctrine of the
Real Presence is also known as the
sacramental union. This theology was first formally and publicly confessed in the
Wittenberg Concord (1536). It has been called "
consubstantiation," but Lutheran theologians reject the use of this term "since Lutherans do not believe either in that local conjunction of two bodies, nor in any commingling of bread and of Christ's body, of wine and of his blood." Lutherans use the term "in, with, and under the forms of consecrated bread and wine" and "sacramental union" to distinguish their understanding of the Eucharist from those of the Reformed and other traditions. Lutherans affirm that the Eucharist is a sacrifice "in the sense that 1) it is Christ, not the celebrant priest, who offers and is offered as the sacrifice, 2) Christ's sacrifice of atonement is made once and for all with respect to God, and 3) it is sacramentally enacted so that its benefits are distributed to the believers each and every time the Eucharist is celebrated." The Lutheran dogmatician
David Hollatz summarizes the teaching of the Church on the Eucharistic Sacrifice: To remove any hint of doubt or superstition, the
reliquiæ traditionally are either consumed, poured into the earth, or reserved (see below). In most Lutheran congregations, the administration of private communion of the sick and "shut-in" (those too feeble to attend services) involves a completely separate service of the Eucharist for which the sacramental elements are consecrated by the celebrant. Lutheran churches typically offer the Eucharist at least weekly, especially on the
Lord's Day, though daily Mass is celebrated in some Lutheran churches, as well as at Lutheran
convents and
monasteries, such as
Östanbäck Monastery and Saint Augustine's House. The
Augsburg Confession teaches that in Lutheran churches the sacrament of the Eucharist is to be celebrated at least every Lord's Day, with the
sacrament of confession being offered beforehand. Weddings and funerals often include the celebration of the Eucharist, but at the ordinations of pastors/priests and the consecration of bishops, the Eucharist is nearly always celebrated. ==Practices==