Which subjects were included in Gratian’s Decretum?

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Compiled by the monk Gratian around 1140, the Decretum Gratiani is a comprehensive collection of nearly 3,800 texts covering all areas of church discipline and regulation.12

Rather than being a simple compilation, the work serves as a systematic application of the scholastic method, intended to resolve contradictions among various legal sources. The subjects addressed in the Decretum include:12

  • Sources of the law
  • Ordinations and elections
  • Simony
  • Law of procedure
  • Ecclesiastical property
  • Monks, heretics, and schismatics
  • Marriage
  • Penance
  • Sacraments and sacramentals2

By organizing these diverse materials, Gratian provided a foundational text for the study of canon law in universities and established a framework that influenced ecclesiastical administration for centuries.12