The apostolic see was asked how ritual systems, especially the system of clerical ordination, should be coordinated with the rules for the reception of repentant heretics. The main ritual system in question was clerical ordination, but baptism was drawn into the discussion. The main heresies in question were the Novatians, the followers of Bonosus and (less prominent) some Arians. The actual content of these theological heresies was hardly discussed in the papal responses. In terms of modern analytical ‘etic’ concepts, the responses are legal rather than theological. The last part of the chapter explains this conceptual distinction – between ‘legal’ and ‘theological’ – as it will be used throughout the book. Medievalists sometimes assume that canon law and theology were indistinguishable before the late twelfth century. It is true that they had constituted a continuum in the eleventh and twelfth centuries. When we look further back to late Antiquity, however, we find that a de facto distinction had emerged, even if around 1100 it would be submerged for a time.

Whether to baptize returned heretics, and whether to let them exercise priestly functions, were major practical problems, solutions for which called on the subtlety and flexibility of, especially, Innocent I.