It is necessary, then, to carefully distinguish Christian morality from political morality; the former makes saints, the latter citizens:
Seems to be arguing that societal morals come into being through policy - perhaps laws and nuanced judicial ruling. But I feel this is being said with the luxury of hundreds of years of the maturation of legal systems up to the 18th Century. Put yourself in the place of someone from 10,000 BCE, for example. Context is key.