In the effort to reconcile and unite the contending forces against the Turks, Charles V demanded of the Lutherans a written statement of their doctrines.
Its tenth article concerned the Real Presence of Christ in the Blessed Sacrament, a burning question among the Protestants.
Adopting Martin Luther's interpretation of the communicatio idiomatum, Brenz argued that the attributes of the Divine Nature had been communicated to the humanity of Christ which thus was deified.
His assertion that Christ's human nature had been deified, and that His body was in the Eucharist as it was elsewhere, contradicted Catholic teaching and was considered heretical.
In 1583, Martin Chemnitz, who had unconsciously been defending the Catholic doctrine, calmed the discussion by his adhesion to absolute Ubiquitarianism.