Summary of St. Augustine’s City of God per Sparknotes
In A.D. 410, a pivotal moment in Western history, the Vandals, under the command of their king, Alaric, captured the city of Rome. Rome was known as the Eternal City because the Romans thought that it would literally never fall, and the year 410 shook this belief to its foundations and ultimately led to the collapse of the Roman Empire. The world itself seemed to have been destroyed, and everyone sought answers about what to do and what to believe in.
Those who adhered to the waning pagan faith were quick to blame the Christians, claiming that the gods had abandoned Rome because many Romans had forsaken them and taken the new faith. These Romans claimed that Christians were not patriotic enough because they asked people to serve God rather than the state, and they advocated forgiveness toward enemies. More important, they said the Christian God had failed to protect Rome, as he should have done, since Constantine had declared him to be the one true God. The angry wrangling between the two communities prompted Augustine to begin writing The City of God in 413.
The first ten books of The City of God, which make up the first part of the work, refute the pagans charges that Christians brought about the fall of Rome. The first five books deal with the pagan belief that people must worship the old gods to achieve material advantages in this world, including the continuation of the Roman Empire and the supremacy of the city of Rome.
In book I, Augustine attacks the pagans, who claimed that Rome fell because the Christian religion had weakened it, and he stresses that misfortune happens to everyone.
In book II, he demonstrates that the fall of Rome is not a unique event in human history. The Romans suffered calamities before, even when the old gods were being actively worshiped, and those gods did nothing to prevent those calamities from happening. He suggests Romans became weak because of these gods, since they gave themselves up to moral and spiritual corruption.
In book III, Augustine continues discussing catastrophes that occurred in pagan times to further prove that Christianity did not cause Rome to fall. To drive home his point, he asks again why the old gods did not defend Rome in the past.
In book IV, Augustine suggests an alternative view. Rome endured for many centuries because it was the will of the true God, and its survival had nothing to do with pagan gods such as Jove, who behaved only in the lowest manner.
To continue reading:
http://www.sparknotes.com/philosophy/augustine/section2.rhtml