

When Paul was writing his letters, including instructions for those who were under the thumb of the government, he was writing as one who knew government persecution. Considering himself a slave of Christ, he wrote instructions to slaves; considering himself a Roman prisoner, he wrote instructions to those under Roman rule; considering himself condemned to death, he wrote instructions to those who suffered.
If Christians should continue to always be a voice of the political outsider challenging the mainstream (so Yoder, Hauerwas), what should they do if they happen to find themselves in a position of political power? This question was driven home for me by something interesting I saw in Caesarea: The inscriptions above have been excavated in ancient tax collection centres from the Byzantine (ie Constantinian) period: Here, adorning the floor, are quotations from the apostle Paul (Romans 13), warning those who enter that if they want to live without fear, they should "do good" in relation to the authorities! The voice of the Roman prisoner has been co-opted by the Roman government as a means of enforcement... I'll let you do the translation, dear reader* - it's quite easy Greek.
*note use of the singular