TFG is playing to the religious nut cases in his base
https://www.msnbc.com/rachel-maddow-show/maddowblog/matters-trump-keeps-talking-final-battle-rcna133941
But what matters about the campaign commercial is the audio that plays while the Republican is seen walking:
This is the final battle. With you at my side, we will demolish the Deep State. We will expel the war mongers from our government. We will drive out the globalists; we will cast out the communists, Marxists, and fascists. We will throw off the sick political class that hates our country. We will route the fake news media, and we will liberate America from these villains once and for all.
Most of the rhetoric was boilerplate, though it was his first five words that stood out as notable:
This is the final battle.,,,,,
But theres a bit more to it than that. The Washington Posts Philip Bump had a terrific piece along these lines a couple of months ago:
If your immediate point of reference for that [final battle] phrase wasnt to the Book of Revelations depiction of the apocalypse, you are probably not a Trump supporter. (A 2012 poll from PRRI found that the religious group most likely to say that the end times as predicted in Revelation would occur during their lives was evangelicals.)
Noting the invocation at a Trump rally in Iowa in November, Bump highlighted the rhetoric from a conservative Baptist preacher, who insisted that lies, corruption, and propaganda are driving civilization to ruins.....
Its a safe bet that when the Republican frontrunner makes references to the final battle, that young evangelist hears something different than secular audiences hear.