What is the function of Canon Law? Role of Canon law in the early Church may be characterized as: Christian theology; structured by the Roman Law and; brought to bear on the institutional necessities of the Church. History of Canon Law Structure of the Latin Code of Canon Law The sources and features of Ecclesiastical Law General Decrees and Instructions Singular Administrative acts Physical persons 96- 112 Juridic persons 113-123 Juridic acts 124 –128 The power of governance Ecclesiastical offices.