Chapter 1, Part 4 - The Real Presence as Transubstantiation and Concomitance (p. 28)
In response to Berengar the Church tried to define terms. In what way is Jesus present in communion? Yet on p. 29 Sasse observes that the question of whether a change occurs did not come up. Rather, the conversation was about what kind of change happened. The explanation required theologians to go beyond Scripture. By the 13th century the explanation of transubstantiation was emerging. Sasse discusses the implications of the wording of the dogma, especially as articulated by Thomas Aquinas.