oikoumene

…one universal Christian society, the oikoumenē, led jointly by the empire and the church—was still the ideology of the Byzantine emperors. The authority of the patriarch of Constantinople was motivated in a formal fashion by the fact that he was the bishop of the “New Rome,” where the emperor and…

…“house,” “family,” “people,” or “nation”; oikoumenē, “the whole inhabited world”; and oikoumenikos, “open to or participating in the whole world.” Like many biblical words, these were invested with Christian meaning. The word oikoumenē describes the place of God’s reconciling mission (Matthew 24:14), the unity of the Roman Empire (Luke 2:1)…