In the later medieval period, the Franciscans and Dominicans developed a new form of preaching, usually referred to as the university sermon. One fifteenth-century preaching manuscript uses the metaphor of a tree to describe this new form.2 From a very short trunk extends three major limbs, each of which bears three smaller branches. The approach is to take a central theme and break it into three points, each of which is then divided into three subsections. The university sermon
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