Uneven. More like 3.5 stars. Impressionistic, argumentative, and opinionated - seemingly a series of essays, stitched together but never given a thorough editing into a coherent monograph, Connelly and Bellows' book is marred by frequent redundancies, spotty and sometimes missing transitions, and thus wanderings around in search of places to touch down.
That said, the icon-shattering Connelly, presumably the pricipal author - and author as well of the controversial iconoclalstic biography The Marble Man: Robert E Lee and His Image in American Society - and Bellows create a plausible theory of the case that the tragic-heroic post-Civil War "Lost Cause" mythology lived on into the 1980s, when their book was published, and by our own reasonable extrapolation can be said to live on to this very day in 2017. Indeed, it's possible to look on this book - and I do - as a useful companion volume to JD Vance's Hillbilly Elegy, almost as a catalog of various species of Lost Cause themes and symbology that surface in political campaigns, and, particularly, in the GOP national and local campaigns of 2016, pitched to a broad demographic of disgruntled, alienated, distrustful-of-government, largely white and working class voters. Precisely the demographic of Lost-Cause adherents.
As many others have observed, the book's title is somewhat misleading. We should view book and article titles as contracts with the reader, offering promised, relevent content in exchange for the reader's time and effort. I dock the book a half-star for breaking its contract with the reader. Yes, General Longstreet does make an appearance, but only in the first essay, as a target of vilification by Confederate generals. The "God" of the title is the conservative "Classic Christianity," Bible- and salvation-centricity of evangelical Southern worship that lends a religious overtone to the Lost Cause, in which a defeated South is redeemed from God's wrathful judgment with a 19th romantic narrative - "we were the better men and lived more wholesomely" - and tragedy - "our culture and environment doomed us to war." Longstreet never returns to the narrative, except in one instance, in a reprise of Jubal Early's campaign of defamation, in which Longstreet is again blamed for Lee's and the Army of Northern Virginia's defeat at Gettysburg. Themes of Southern piety, however, and thus of God and Classic Christianity, repeatedly return and are central to the main story.
Connelly and Bellows are exhaustive researchers who point usefully to a variety of primary and secondary documents that illuminate the topic of the Lost Cause and its transformation from Jubal Early and company's angry "We were better, had the better commanders, and should have won" (but for men like Longstreet) to the redemptive post-Reconstruction Lost Cause that focuses on a Robert E. Lee shorn of specific Southern characteristics and denatured into a kind of shimmering, flawless saint, accepted in the North after 1900 as an ideal of American, not Southern, Manhood (rather than as a traitor who got off easy). The authors rely primarily on literary 19th and 20th Century sources to make their case... many now obscure but many others - William Faulkner, Allen Tate, Carson McCullers, Erskine Caldwell, for example - familiar to most readers. The concluding two chapters are useful summaries of Connelly's earlier demythification of Lee and the argument for the enduring relevance of Lost Cause thinking.
In short, a worthy addition to your post-Civil War/Reconstruction/"New" South library, but not quite what the title offers.