Kyle Harper at First Things:
The Roman Empire that nurtured Stoic moralists such as Musonius and Epictetus was really an agglomeration of societies connected by bustling roads and busy sea-lanes. It was a sprawling, polyglot, and agrarian empire. The empire was home to a galaxy of cities—some one thousand of them, most of them smaller than their proud marble ruins might suggest. A grievously poor and unlettered peasantry constituted the silent majority, and some 10 or 15 percent of the empire’s inhabitants had the misfortune of finding themselves in bondage, as chattel slaves whose bodies could as well have been inert matter in the moral imagination of ancient philosophers. Life expectancy at birth was in the mid-twenties. The evanescence of all life turned eros into a divine blessing to be enjoyed in proper season. But the grim realities of Roman life expectancy also made reproduction urgent. Epictetus’s short list of human duties encompassed “citizenship, marriage, child production, piety to God, care of one’s parents.” Sex was a civic duty.
This was the scene onto which the Christians came loudly striding. The Christian movement’s sexual demands were not just austere or unusual. They were jolting, and deliberately so. The apostolic generation did not pour out of the Levant onto the open roads of the empire with anything like a detailed packet of sexual rules. Paul’s letters show us that Christian sexual morality was settled on the go, adapting the gospel’s searing ethic of radical love and interior purity to the realities of life in the towns of the empire.