Argument

HAVING IN THE PRECEDING BOOK SHOWN THAT THE WORSHIP OF DEMONS MUST BE ABJURED, SINCE THEY IN A THOUSAND WAYS PROCLAIM THEMSELVES TO BE WICKED SPIRITS, AUGUSTINE IN THIS BOOK MEETS THOSE WHO ALLEGE A DISTINCTION AMONG DEMONS, SOME BEING EVIL, WHILE OTHERS ARE GOOD; AND, HAVING EXPLODED THIS DISTINCTION, HE PROVES THAT TO NO DEMON, BUT TO CHRIST ALONE, BELONGS THE OFFICE OF PROVIDING MEN WITH ETERNAL BLESSEDNESS.