In a crowded, frescoed room in an old Roman palazzo off the Piazza Navona in March, Jesuit Father Robert Taft cited history again.
He showed that Catholic Masses didn't use the so-called words of institution, "This is my body, this is my blood," until after the Council of Nicaea in 325, and that even then the words of institution were not ordered until the Council of Trent issued a decree in 1531, responding to Luther's challenge over transubstantiation.
A final affirmation ...