I am pretty sure that was not Jefferson’s point.
It doesn't matter because that fact overrides his point; why? because without Jesus everything is moot, useless, futile… death.
Only in the light of God does anything we do have real purpose, and that includes both nation-building (or separation) and attempting to obtain justice — which was Jefferson's point. That our first founding document places this in the forefront and builds its case for separation from Britain on that truth, making it foundational to the argument, is a good place to start and quite likely the reason it's stood the test of time so well.