The separation of religion from politics, and the historical emergence of Judaism and its spin-off, Christianity, however, did not develop until late antiquity; these institutions are a long-range result of the Romans’ use of political and military power to ensure that indigenous peoples’ commitment to their traditional way of life not interfere with their submission to the imperial order.
— Richard A. HorsleyReligion and Empire: People, Power, and the Life of the Spirit (2003)