It seems to me that many in Faith based circles are sensing a tectonic shift in American Culture. I believe this to be true. I do believe that many are overly alarmist, and that we are so closely entwined with the events and trends of the day that we do not have clear insight.
With these thoughts I was perusing my bookshelf and came across a couple books which apply to this situation, one lyrical, and one historical. Ballad of the White Horse is probably my favorite of Chesterton's works. For those unaware, it is a book length lyric poem about the battle between Alfred the Great and Guthrum of the Vikings. There is interpersonal tension, emotions of courage, fear, and cowardice, as well as the foreboding of being present at an epoch changing event.
The second book I paged through was H.W Crocker's Triumph. There are some areas that I think Crocker could delve more deeply into, but he does have to be brief in order to catch the whole range of his intended subject. What I notice from Crocker is the ebb and flow of history. Renewals and Renaissance follow periods of laxity and persecution. Easter Sundays follow Good Fridays.
Two very good and grounding volumes to gain some perspective.