Michael Gaddis' work touches on some of the same territory covered by Ramsay MacMullen in his recent work, Voting About God. These works compliment each other well. MacMullen focuses on the actual church councils but touches upon the violence, while Gaddis looks more closely at the violence itself, its origins, its role in the imperial system, and its appropriation by the Christian movement.
The author's writing style, while not as engaging as that of MacMullen, is still very good and easy to follow. His prose is not turgid or difficult and it is not bogged down by foreign turns of phrase, or, as often happens in scholarly works, chunks of untranslated Latin, Greek, or German text.
I do think the author makes certain basic assumptions that are by no means proven. Necessarily, given the scope of his work, he cannot go far back into the imperial past and offer a in-depth treatment of repression and toleration and it needs to be understood that the Roman system was by no means unusually intolerant for the period. On the other hand, he does not fall into the trap of Richard Horsley, who seems to include Rome as a foremost member of the "Axis of Evil." Too, he treats the "persecutions" as though they happened exactly as Christian mythology claims, which is by no means proven. A good case can be made that none of the first nine persecutions claimed by apologists took place. The last, that of Diocletian, is more problematic, but even here we do not know enough about what Diocletian did, or why, since we have only the account of his opponents to go on. As MacMullen has elsewhere noted, the weight and bias of Christian sources distorts our view of this era.
These faults aside, Gaddis pulls no punches when it comes to examining the violent nature of late imperial rule, something MacMullen has also touched on in several of his works. It was a dark, brutal period, and Gaddis sees the origins of violence in the need for consensus. This, he thinks, motivated Diocletian, and he believes it motivated Constantine and the Christian rulers who followed him to the throne.
But it is not only the secular leadership of the empire but the rank and file who embraced violence. Gaddis does well to point out that just because a group sees itself as persecuted does not mean that it is, and that in the case of these early Christians, even the existence of polytheism was seen as persecution of a sort. Christians stopped at nothing to show their displeasure, from acts of violence guaranteed to see them beaten, imprisoned, or killed (both by pagan or Christian authorities) to open persecution of polytheists, so-called heretics, and Jews. Like MacMullen, Gaddis makes clear that Christian hatred was as great or greater for other Christians than for pagans.
What sets this book apart is its focus on religious violence. It is by no means the first book to examine monotheistic violence but it's focus on the early Christian empire makes it especially interesting as it is this period which set the tone for all that happened in the centuries following. It is a book every Christian should read. It will disabuse them of the notion that the "conversion" was some sort of peaceful process, or the myth that pagans rushed to worship the Christian god as soon as it became the state religion. As MacMullen has said, Christianity was imposed from above through violent measures, measures that had no limit, and Gaddis does not disagree.