The survival of the Empire in the East assured an active role of the emperor in the affairs of the Church. The Byzantine state inherited from pagan times the administrative and financial routine of organising religious affairs, and this routine was applied to the Christian Church. Following the pattern set by Eusebius of Caesarea, the Byzantines viewed the emperor as a representative or messenger of Christ, responsible particularly for the propagation of Christianity among pagans, and for the "externals" of the religion, such as administration and finances. The imperial role in the affairs of the Church never developed into a fixed, legally defined system, however.